Bonnet (hood): Recommended covered with fire-retardant， heat insulation， sound insulation and better compression format machine cotton 1

Roof floor: 2 meters (3 meters vans and other similar criteria)

Four soundproof: 4 meters (similar to standard vans and other vehicles 5 5 m)

Trunk (rear): 2 meters (including tail cover 3 meters)

Cockpit low (floor): 3-4 meters (mini car 2 meters， 3 meters standard models， vans and commercial vehicles 4 m)

Fenders (4): It is recommended to use 3 to 4 meters shockproof rubber

U groove + block firewall: 1 m

Products: Automotive barrier foil insulation cotton is mainly outside of the sun and the heat generated by the engine to design， can be used in the whole car before the car door， underbody armor plate， roof， install a layer of insulation hood cotton， namely blocking the outside heat but also have the effect of noise， complex variety of aluminum foil to enhance the effectiveness of insulation and reduce heat absorption. Car foil insulation cotton looks beautiful beautiful， simple and convenient construction， general specifications are 1M * 10M， can be customized according to customer requirements， the product also has a safety and environmental protection， tasteless， non-toxic， water corrosion， weather resistance， good flexibility， bending free with self-adhesive， tear kraft paper can be pasted

Product comes with aluminum foil and have no need to buy another strong adhesive glue. Stocked without consultation， to ensure the quality and speed of delivery. (No flame， do not use an open flame test)

Is well known， the car idling， accelerating or driving state under different road noise generated by the chassis and body resonance resonance amplification or noise after passing the car， so the occupants feel uncomfortable. Because the sound is spread through vibration. So the project is to use professional acoustic soundproofing products for car body vibration and acoustic， conducted filters to remove noise from the transmission route. Soundproofing works mainly through two ways to deal with:

(1) the use of noise damping materials to achieve the purpose of silencing noise. For example: In the rear doors， luggage， etc. chassis vibration deadening paste， it will play a reinforced body structure and control of the body and the outside noise resonance effect. This is because after pasting noise damping material. Changes in the body's natural frequency， resonance and resonance control exterior noise generated by the body， so that a noise filters to remove the car.

(2) the use of sound-absorbing material to achieve the purpose of silencing noise. For example: After the engine hatch using sound-absorbing materials significantly reduce engine noise. This is because the sound-absorbing material is an acoustic foam material， which are distributed inside the horizontal opening and closing the mouth and oral cavity， i.e.， the noise can be effectively sound energy into mechanical energy and heat energy consumed， so as to achieve the purpose of absorbing noise

Using these two materials are not independent， with the use will achieve the best results.

This product is a strip of aluminum foil! The thickness is 10MM! Do not take this material and the other is not to compare our thickness.

The following data is for informational purposes only， and we can only be sold by the meter.

Four soundproof: 3.5-4 m

Hood: 1- 1，5 m

Soundproof roof: 2-2.5 meters

Four soundproof: 4 m

Trunk: 2-3 meters

Cockpit Low: 3-4 meters

[Products]

Thickness: 10mm (1 cm)

Width: 1 m

Length: Length 10 m roll around， you can cut out from one meter to sell.

Car engine noise project can noise， vibration， body resonance door， when driving with the road， air resistance generated friction sound， effectively eliminate and barrier， giving you a quiet driving space， which greatly improves driving comfort .

Body hood， doors， back-up cabin， roof， fender pull the metal key parts of Africa are relatively weak， after the installation of insulation materials， the body is more robust collision， the passive safety factor is improved.

Sound， especially at the rear of the subwoofer， the trunk will cause vibration， sound is reduced， which is not done properly because of damping， the structure can not afford a car bass impact， issued a "creak" sound. After construction noise， eliminating the resonant metal body， and also a good sound-absorbing effect， can feel the sound more clear， vigorous， surging.

Why use cotton insulation?

1. To prevent the spread of heat engine hood， the hood to protect the paint，

2. The role is to absorb the engine noise transmitted outside the car， while the control side of the stage (the firewall) sound-absorbing cotton to absorb engine noise transmitted to the car， your car should have a firewall above absorbent cotton， which is marked distribution， and only high-end cars have hood cotton insulation.

Soundproofing Raiders:

1. Cover

Most models of the front cover are four screws attached to the body， but also with hydraulic tappets， remove these screws and wipers to clean the mouth of the pipe connection， you can remove the front cover， they both need with removal， be careful not to damage the front windshield. After removing noise cotton on to prevent paint scratches， perhaps some of the original car cover with a piece of cotton insulation， we generally demolish abandoned because it was too small. Play a negligible role. Clean up the front cover do soundproof side， generally do not have oil， then wipe clean with a wet towel to dry， the only shock board cover according to the shape of the groove， cutting the big stick out about a work-point groove in the cover part ， only shock board extra stuffed inside the gap between the cover panel to strengthen the tendons and machine compacted by hand， this is because it is more difficult to fall off， and then cut a piece slightly larger than cover the entire double-sided cotton insulation brush gluing machine front cover， compacted by hand from the middle to the edges. All the bubbles expelled， the department is very important， otherwise the cotton insulation off easily. With a new wallpaper knife edge 1 cm away from the hood where cut out edge， in order to cut neat appearance， remaining 1 cm edge seal is used to paste. The wiper spray nozzle fittings aside to prepare for loading plug， so that the front cover is all done. He protects the paint， the shielding effect of the engine sound， of course， is on the outside to listen. There are a lot of riders ask， is not it affect engine cooling， and now the car engine is water-cooled， depending on the water tank and the cooling fan to dissipate heat， and this has nothing to do. The whole car is generally 8-14 meters with cotton insulation， just shock plate 5-10 meters. Cotton insulation effect alone a lot worse， and we've also done a lot of cars， ineffective， but also a lot of people doubt the reason for the noise.

2， U-shaped grooves

Demolition wipers screws teeter can win wiper arm， and then remove the U-shaped slot cover， cover screws useful， but also useful plastic buckle fixed， try not to dismantle the bad， bad split in buy anyway not worth the money. Then remove the wiper motor and linkage arm mechanism， the general car is 4，5 screws connecting the wiper motor connector to unplug the win， the same is to clean up the U groove， the only shock plate with waxed side exposing under the U-shaped groove stick， collage pieces can be connected into a whole can， painted on the top layer of cotton insulation adhesive， glue side of the soundproof smooth cotton. U-shaped grooves should be noted that one is not to put the car inside and outside the loop inlet blocked， usually in the front passenger side of the inlet， then there are not two sides of the U-shaped groove Tangshui port is blocked， otherwise the U-shaped groove on a pool of water a. Some models of the U-shaped groove does not open， then do not do it， for example Alto car.

4， the roof

First full demolition， pedal door， door seals， seats， flooring， ABC three columns pinch， sun visors， mirrors， door handles， dome light， you can win the ceiling， do not wrinkle， and some ceiling stuck on the roof， you can go into his hand from the four sides of the gap， the glue can be won separated roof liner.

The first step is the roof， after cleaning the roof， the roof tin glue only shock plate， with a skylight also do so， but first put the sunroof mechanism to win， then cotton insulation glued to the roof lining smooth surface on， do not do too aside， otherwise easily refitted in place， the entire car at the end， too， put the seat portion of the screw holes leaving holes. Roof and underbody parts more gluing cotton insulation is not necessary， because they would not move under pressure in the liner， then green plastic Furthermore also scented， cotton insulation done so only a little bit of shock board no waste， in addition to the exposed parts no need to stop the pursuit of complete shock cotton insulation board， pieces can be put together， but must spell a whole， ABC and underbody all sides to fill the cavity with foam rubber， construction Note: First high temperature construction time， then there can be pre-sprayer spray some water， because styrofoam is to absorb moisture from the air to the expansion， the expansion of this can be better. After playing glue inside the hole， the hole is sealed with tape to prevent the adhesive everywhere， if available styrofoam glue cleaning agent， selling styrofoam place has to sell， then there try to buy multiple large foam rubber， usually with about 4，5 tank models， the market price of ten dollars a jar. Generally where do they buy aluminum doors and windows， and doors and windows to fill the gap.

5， the baffle wall， the inner fender and underbody

Because of the noise comes from the largest car exhaust pipe and tire noise， so this step is also critical， baffle wall on the outside to make the gap smaller bad construction， the cab would be too cumbersome， requiring removal of the instrument panel， air conditioning evaporator box. If you want to remove the fender to do so， will result in the front cover， door gaps， headlight changes， the majority of riders， after all， not a professional panel beaters， so that the firewall and fender， we use armored plastic handle， because construction convenient， armor tape has nozzle can be sprayed into any space， made out of integrity， seal better. Plastic liner can first remove the front tire on， find a place to wash him five dollars to let him clean with water cannons specifically block firewall， inner fender and the entire chassis. After the glue to dry， spray paint around the front part of the chassis should exhaust pipe waste newspapers and blocked with paper taped to the good， and then carefully sprayed over and over again， do not spray foam flowing， cool for a while glue does not flow when then spray a second time， so repeated spraying， coating thickness determines the effect， we are generally two boxes of plastic spray bottle 24. Not feel more spraying， so the block firewall， fender， chassis made of a whole.

6， the exhaust pipe