bag on valve filling machine

The Bag on Valve (BOV) Filling Machine is a professional, fully automatic aerosol filling equipment specially designed for packaging high-end spray-type dry mortar and building chemical products. It is mainly used for the quantitative filling of spray tile adhesive, spray repair mortar, waterproof spray mortar, thermal insulation coating and other powder and cream-like building materials.

Adopting advanced bag-on-valve isolated filling technology, the machine completely separates the dry mortar material from the propellant gas through an inner flexible bag inside the aerosol can. The mortar never contacts the propellant, which avoids material deterioration, discoloration and performance attenuation during storage. With PLC intelligent control, automatic can positioning, vacuuming, material filling, valve crimping and gas filling are completed in one continuous process. It is the core specialized equipment for mass production of high-stability long-shelf-life spray mortar products in modern building material factories.

• Isolated BOV Filling Technology:The inner bag completely isolates mortar materials from propellant gas. It effectively prevents chemical reaction, material drying and agglomeration, ensuring the original bonding strength, flexibility and stability of spray tile adhesive and repair mortar, and greatly extending product shelf life.
• High Filling Precision & Consistency:Equipped with precision quantitative metering system and servo filling structure. The filling error is controlled within ±2ml, ensuring consistent net content and uniform spraying effect for every aerosol mortar can, avoiding product differentiation.
• Full Automatic Integrated Production:Realizes automatic can feeding, positioning, inner bag filling, valve sealing, crimping and propellant filling. It minimizes manual intervention, greatly improves production efficiency and reduces human error and labor costs.
• Powerful Material Compatibility:Adaptable to dry powder mixed mortar, fine particle tile adhesive, elastic repair mortar, waterproof coating and other low-viscosity and medium-viscosity building chemical materials. It supports flexible production of multiple formulas.
• Explosion-Proof & Safe Operation:The whole machine adopts explosion-proof electrical configuration, fully sealed filling structure and safe gas recovery device. It eliminates hidden dangers of propellant leakage, meeting international safety standards for aerosol and chemical workshops.
• Intelligent PLC Control System:Equipped with touch screen human-machine interface. Filling volume, production speed and working parameters can be adjusted visually. It supports automatic counting, fault alarm and parameter memory function with simple and fast operation.
• Easy Cleaning & Low Cross-Contamination:The material contact parts adopt quick-disassembly structure. When switching different mortar formulas, residual materials can be thoroughly cleaned quickly, effectively avoiding cross-contamination between different building chemical products.
• Stable & Durable Structure:Key parts are made of anti-corrosion and wear-resistant stainless steel. The equipment runs stably with low failure rate, suitable for long-term continuous industrial batch production.

• Complete full pre-operation inspection before startup. Check the tightness of equipment parts, the sealing performance of filling nozzles, the sensitivity of sensors and the normal operation of explosion-proof system. Ensure no foreign sundries inside the filling cavity.
• Check and stabilize the compressed air source pressure within the standard range. Keep the air source dry and clean to avoid pneumatic component failure which may affect filling accuracy and sealing quality.
• Set filling volume, operating speed and production parameters strictly according to product formula requirements. Only professional technicians are allowed to adjust system parameters; unauthorized modification is prohibited.
• Ensure that the mortar materials are uniform, free of large particles, caking and impurities to prevent nozzle blockage and unstable filling during production.
• Operators must receive professional safety and operation training, and wear anti-static protective clothing, gloves and masks. It is strictly forbidden to touch running components during equipment operation.
• The production workshop must be well ventilated, explosion-proof and fireproof. Open fire, high temperature and static spark generation are strictly prohibited in the working area to ensure safe aerosol production.
• Follow standard startup and shutdown procedures. Perform no-load test operation before formal production; stop feeding first before shutdown, and shut down the equipment after all procedures are completely finished.
• Clean material contact parts thoroughly after daily production to remove residual mortar powder and slurry, preventing material solidification from affecting the next production batch.
• Carry out regular maintenance on electrical systems, pneumatic components and filling accessories. Replace aging sealing parts regularly. Cut off power and air supply completely during equipment maintenance.

• Spray Mortar Production Lines:Professional filling and packaging for spray tile adhesive, quick-setting repair mortar and wall repairing mortar, supporting automated aerosol mortar production.
• Building Chemical Factories:Suitable for mass production of aerosol waterproof mortar, spray anti-crack coating and functional building chemical materials.
• High-End Decoration Material Enterprises:Used for producing high-storage-stability spray bonding materials for interior and exterior wall renovation and tile repairing projects.
• New Building Material R&D and Production Bases:Adaptable for customized filling of new formula spray mortar products, meeting diversified and high-standard product production needs.
• Export-Oriented Building Material Plants:Stable filling quality and long shelf-life products fully meet international export standards for aerosol building materials.

• Q1: What is the biggest advantage of BOV filling machine compared with ordinary aerosol machines? A1: The BOV isolated structure separates mortar materials from propellant gas completely. It avoids material deterioration, agglomeration and performance loss, realizing longer shelf life and more stable spraying effect for spray tile adhesive and repair mortar products.
• Q2: Why does the finished aerosol mortar have unstable filling volume? A2: The main reasons include unstable air pressure, blocked filling nozzle, residual material accumulation, abnormal sensor calibration or parameter disorder. Regular cleaning and parameter calibration can solve the problem effectively.
• Q3: Can the machine switch different mortar formulas for production? A3: Yes. The equipment has strong material compatibility. When switching formulas, thoroughly clean the material tank, pipeline and filling nozzle to avoid cross-contamination of different mortar components.
• Q4: Does this equipment meet explosion-proof safety requirements? A4: Yes. The whole machine is equipped with explosion-proof electrical components, fully sealed filling structure and safe gas recovery system, which fully meets the safety production standards for aerosol and chemical workshops.
• Q5: What kind of materials is the BOV machine most suitable for? A5: It is specially optimized for fine powder dry mortar and medium-viscosity building chemical materials, especially suitable for spray tile adhesive, repair mortar and waterproof spray coating products.
• Q6: How to solve nozzle blockage during filling? A6: Stop production immediately, cut off power and air supply, then disassemble and clean the nozzle and material pipeline. Filter raw materials before feeding to prevent large particle impurities from entering the equipment.
• Q7: What daily maintenance is required for the BOV filling machine? A7: Daily maintenance includes cleaning residual materials, checking air pressure and circuit stability, inspecting sealing conditions, and calibrating filling accuracy. Regular maintenance ensures stable production quality and extends equipment service life.