Project Background and Customer Profile

Dongguan Changrongjia Plastic Bag Co., Ltd. is a professional enterprise that produces plastic packaging products such as aluminum foil bags, zipper bags, composite bags, plastic bags, food bags, vacuum bags, anti-static bags, and shaped bags. It has a complete and scientific quality management system and has accumulated a good reputation in the industry through honest management and high-quality products.

Dongguan is located in the the Pearl River Delta and has a subtropical monsoon climate. The annual temperature is high, the summer is humid and rainy, and the winter is mild and humid. The long-term high temperature and humidity environment has brought great challenges to the working comfort and product quality stability of the production workshop. As an important part of the "world factory", Dongguan has a dense manufacturing industry, particularly developed plastic products and packaging industries, complete industrial chain supporting facilities, and constantly increasing requirements for the production environment.

The production process of plastic bags involves multiple processes such as blown film, printing, lamination, and bag making, many of which are sensitive to temperature and humidity. For example, in the printing process, fluctuations in temperature and humidity can easily lead to decreased ink adhesion and inaccurate color matching; In the composite process, if the environmental humidity is too high, problems such as material adhesion and decreased peel strength are prone to occur. Therefore, a stable, clean, and comfortable production environment is the key to ensuring product quality and employee efficiency.

Customer Needs and Challenges

The customer's production workshop is a standard multi story reinforced concrete structure factory with good lighting, but strong sealing and poor air circulation. With the increasingly fierce market competition, customers hope to enhance their overall competitiveness by improving the production environment, improving employee work comfort and product quality.

[Scheme Design and Implementation]

After conducting thorough research on the project site, the design team of Ruifeng Company comprehensively considered the following key factors:

1. Geographical and climatic factors: Dongguan experiences high temperatures and humidity in summer, which requires addressing the issues of stuffiness and poor air circulation in workshops;

2. Structural characteristics of the factory building: Multi story factory buildings with limited load-bearing capacity of walls, requiring avoidance of damage to the building structure;

3. Production process requirements: Printing, lamination and other processes are sensitive to environmental temperature and humidity and need to be kept stable;

4. Space layout and equipment placement: Minimize the occupation of indoor production area by equipment and improve space utilization.

Based on the above analysis, we adopt a combination of high air volume centrifugal air coolers and long air ducts for uniform air supply. The air cooler is installed on the outer side of the building wall and does not occupy indoor production area. After cooling the outdoor fresh air through an efficient centrifugal fan, it is sent into a long air duct system and evenly distributed to various workstation areas through the long air duct. This system has the following advantages:

1. Strong long-distance air supply capability: The high air volume design can effectively cover large-span workshops and solve the problem of long-distance air supply for multi story factories;

2. Positive pressure heat dissipation and turbidity removal: The system continuously sends fresh air to create an indoor micro positive pressure environment, effectively removing the hot and turbid gases generated by employee equipment and improving air quality;

3. Comfortable physical sensation and stable environment: After cooling, the fresh air is evenly distributed, which significantly improves the physical sensation of employees and increases production efficiency. At the same time, stable temperature and humidity also help with process control in printing, lamination and other processes, improving product yield.

Project effectiveness and extended value

After the implementation of the project, the air quality and temperature inside the workshop have been significantly improved, employee feedback has increased comfort, and production efficiency and product stability have been synchronously enhanced. Changrongjia Company highly praised the effectiveness of this project.

Although this is a ventilation and cooling project for the production workshop of a bag making enterprise, its successful experience is also applicable to various industrial scenarios such as printing workshops, packaging workshops, electronic assembly workshops, and food processing workshops that require large spaces, high air flow, and environmental temperature and humidity control. Ruifeng Company has the ability to conduct comprehensive equipment selection, scheme design, and construction installation according to the characteristics of different industries, and can provide customized and systematic ventilation and cooling solutions for complex environments in large spaces.