Technical support

1. Hand-brushing glue 
 

【Precautions】 
1. Remove surface contaminants and loose layers that may interfere with bonding; 
2. The bonded areas should have good fit and a certain degree of smoothness; they must not have significant unevenness or irregularities. 
3. During the bonding process, the humidity of both the bonded components and the work area must be strictly controlled; generally, the relative humidity should not exceed 70%. 
4. When applying aluminum-plastic panels, fire-retardant boards, or other dense materials over large areas, several vent holes must be drilled into the substrate. 
5. When used outdoors in summer, if the construction environment is normal and the board temperature exceeds 70℃, we recommend using our high-temperature-resistant products. 
6. During construction, maintain a good ventilation system, strictly prohibit smoking and open flames, keep away from sources of ignition, and prevent static electricity from causing fires.

【Bonding Operation Process】

Depending on the specific bonding requirements, apply the adhesive evenly to the surfaces of the materials to be bonded using methods such as brush coating, knife spreading, roller coating, or screen-printing. Bonding can be carried out once the adhesive film feels dry to the touch—meaning that no adhesive strands are left behind when your finger is lifted from the adhesive surface. Typically, the initial bonding time is about 15 minutes, with the optimal bonding time ranging from 20 to 30 minutes (depending on the ambient temperature and humidity during application). After bonding, applying moderate pressure will further enhance the bond strength!

2. Spray adhesive 
 

【Precautions】 
I. Precautions for Spraying 
1. The spray painting workshop should be isolated from other workshops, and operating workers should wear protective equipment. 
2. During spraying, the spray gun should move uniformly, without accumulating glue or leaving any areas uncoated. 
3. For spraying, ensure the adhesive layer evenly covers the material at a rate of 12 square meters per kilogram; the adhesive layer should not be too thick. 
4. Double-sided spraying delivers the best adhesion effect; 
5. When the spray gun is not in use, please clean it thoroughly. 
6. Electrostatic prevention, workshop ventilation 

II. Electrostatic Prevention 
1. Maintain good ventilation at the operation site to reduce the concentration of volatile gases (which are flammable) emitted by adhesives. 
2. At the operation site, frequently spray water to maintain an appropriate temperature and reduce static electricity generation. (Generally, static electricity will not occur when the air humidity is 78% or the temperature is 23°C ± 3°C.) 
3. Place humidifiers in areas where large quantities of sponges and spring packs are stored to reduce the generation of static electricity in the materials. 
4. Operators should wear cotton clothing and avoid wearing synthetic fabrics or shoes with metal studs. 
5. Operators should press both hands against the wall or floor every 30 minutes to discharge static electricity from the body, or wear an anti-static wrist strap to reduce static buildup on the body. 
6. When handling, stacking, or covering foam or spring mattresses, handle them gently and avoid friction, rolling, or banging to minimize the generation of static electricity. 
7. During the final step of bonding the sponge or spring pocket, seal from one side toward the other, avoiding completely covering it in one go. This allows for the volatilization of gases from the adhesive. Also, be sure not to tap or bump the bonded area to prevent static electricity sparks. 
8. To effectively prevent static electricity-induced fires, customers are advised to use flame-retardant materials and flame-retardant adhesives. 
9. The operating workshop must be equipped with sufficient fire-fighting equipment. 
10. It is recommended that customers provide employees with regular fire safety training and fire drills. 

3. The workshop must be well-ventilated. 
As we enter the autumn and winter seasons, the air becomes dry, and changes in weather conditions can affect chemical products—especially spray adhesives. Domestic soft-furniture companies generally face similar issues: workshop doors and windows are tightly sealed, collective heating systems are in operation, and airflow within the workshops is poor. As a result, the odor of spray adhesives intensifies, and the adhesives take longer to dry. In fact, the root cause of these problems lies in the absence of ventilation systems or inadequate ventilation.

【Frequently Asked Questions】

I. Common Issues with Adhesive Spraying and Their Solutions:

II. Effects of Poor Spraying 
The adhesive layer is too thin, which can easily lead to insufficient adhesion. 
If the adhesive layer is too thick, it will increase costs, slow down the drying speed, cause adhesive buildup, and compromise bonding quality. 
Uneven application of the adhesive layer can lead to issues such as adhesive buildup, insufficient adhesive coverage, and partial delamination after bonding.

【Bonding Operation Process】

Step 1: Install and activate the ventilation system at the construction site, and open doors and windows to ensure adequate ventilation on site. 
Step 2: Before construction, check whether the spray gun is functioning properly and drain any accumulated water from the air pressure lines. 
Step 3: The material surface must be thoroughly cleaned and free of grease, dust, or any other impurities. 
Step 4: Spray evenly onto the material surface using the nozzle; 
Step 5: After even spraying, allow 1–5 minutes before bonding (or until the adhesive layer no longer sticks to your hands). 
Step 6: Applying moderate pressure during bonding will enhance the bonding effect. 

Straight-line configuration: The nozzle should be positioned at a 45-degree angle to the material surface; it is best to keep the nozzle within 0.5 meters of the material surface; the spray gun’s air pressure should be adjusted to the standard requirement of 6–8 kilograms. 
Fan Shape: The nozzle should be perpendicular to the material surface, emitting a uniform fan-shaped mist of adhesive with a fan angle of approximately 45 degrees.

3. Detergent 
 

【Precautions】

Keep away from fire sources and children. If accidentally ingested, induce vomiting immediately and seek medical attention.

【Frequently Asked Questions】

1. After cleaning, the accumulated adhesive cannot be effectively removed. How can this issue be resolved?

Answer: Cleaners come in different categories, and different types of cleaners should be used for different materials.

2. What should I do if I accidentally ingest it?

Answer: You should immediately induce vomiting and seek medical attention.

【Cleaning Operation Process】

Spray the cleaning agent onto the adhesive film, then simply wipe it clean with a clean cotton cloth. Alternatively, dip a clean cotton cloth into the cleaning agent and use it to wipe the film.