【项目背景与客户概况】

东莞市长荣佳胶袋有限公司是一家专业生产铝箔袋、拉链袋、复合袋、胶袋、食品袋、真空袋、防静电袋、异型袋等塑料包装制品的企业，拥有完整、科学的质量管理体系，凭借诚信经营与优质产品，在行业内积累了良好口碑。

东莞地处珠江三角洲，属亚热带季风气候，全年气温偏高，夏季湿热多雨，冬季温和湿润，长时间的高温高湿环境对生产车间的工作舒适度与产品质量稳定性带来不小挑战。作为“世界工厂”的重要一环，东莞制造业密集，塑料制品与包装产业尤为发达，产业链配套完善，对生产环境的要求也在不断提升。

胶袋生产过程中涉及吹膜、印刷、复合、制袋等多道工序，其中不少环节对温湿度较为敏感。例如，印刷工序中，温湿度波动容易导致油墨附着力下降、套色不准；复合工序中，若环境湿度过高，易出现材料粘连、剥离强度下降等问题。因此，一个稳定、洁净、舒适的生产环境，是保障产品质量与员工效率的关键。

【客户需求与挑战】

客户的生产车间为多层钢筋混凝土结构标准厂房，采光良好，但密封性较强，空气流通性差。随着市场竞争日益激烈，客户希望通过改善生产环境，提升员工的工作舒适度与产品品质，从而增强企业综合竞争力。

【方案设计与实施】

瑞峰公司设计团队在充分调研项目现场后，综合考虑了以下关键因素：

1、地理气候因素：东莞夏季高温湿热，需解决车间闷热与空气不流通问题；

2、厂房结构特点：多层厂房、墙体承重能力有限，需避免破坏建筑结构；

3、生产工艺要求：印刷、复合等工序对环境温湿度敏感，需保持稳定；

4、空间布局与设备放置：尽量减少设备占用室内生产面积，提升空间利用率。

基于以上分析，我们采用大风量离心式冷风机+长风管均匀送风组合方案。冷风机安装在建筑墙体外侧，不占用室内生产面积，通过高效离心风机将室外新鲜空气降温处理后，送入长风管系统，再由长风管均匀分布至各个工位区域。该系统具备以下优势：

1、远距离送风能力强：大风量设计可有效覆盖大跨度车间，解决多层厂房远距离送风难题；

2、正压排热排浊：系统持续送入新风，形成室内微正压环境，将员工设备产生的热气、浊气有效排出，改善空气质量；

3、体感舒适、环境稳定：降温后的清新空气均匀分布，员工体感明显改善，生产效率提升，同时温湿度稳定也有助于印刷、复合等工序的工艺控制，提升产品良率。

【项目成效与延伸价值】

项目实施后，车间内部空气质量与温度得到显著改善，员工反馈舒适度提升，生产效率与产品稳定性同步增强。长荣佳公司对本次工程效果给予高度评价。

本次虽是制袋企业生产车间的通风降温项目，但其成功经验同样适用于印刷车间、包装车间、电子装配车间、食品加工车间等需要大空间、高空气流动性、环境温湿度控制的各类工业场景。瑞峰公司具备针对不同行业特点，进行综合设备选型、方案设计与施工安装的能力，能够为大空间复杂环境提供定制化、系统化的通风降温解决方案。

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.