A Guide to Selecting Manufacturers of Square Bottom Valve Cement Bag Production Equipment

Square-bottom valve-mouth cement bags, as a crucial choice for modern powder packaging, have become the mainstream packaging method in industries such as cement, fertilizer, and chemical raw materials due to their high strength, excellent stacking stability, and efficient filling. Faced with continuously growing market demand, selecting high-quality and reliable production equipment has become an urgent need for many enterprises. This article will provide a comprehensive overview of mainstream domestic and international manufacturers of square-bottom valve-mouth cement bag production equipment, offering a reference for your investment decisions.

I. Market Status and Prospects of Square Bottom Valve Cement Bag Equipment

With the deepening implementation of the "Belt and Road" initiative and the continued growth of global infrastructure demand, the demand for square-bottom valve-sealed woven bags in the cement and related powder industries is constantly expanding. Taking Shaanxi Baihong Ouli Plastics Co., Ltd. as an example, relying on advanced German production equipment, the company has an annual output of up to 350 million industrial packaging bags. Its products not only meet domestic demand but are also exported to countries and regions such as Kazakhstan, Tajikistan, and Mozambique. This case fully demonstrates that square-bottom valve-sealed cement bags have become an important choice in the global powder packaging market.

Square-bottom valve bags offer significant advantages over traditional packaging bags: they are not only more durable and lower in cost , but also increase filling speed , facilitate automated bag insertion and filling, and offer better environmental performance and stacking stability. These characteristics make the adoption of automated production lines for square-bottom valve cement bags an inevitable choice for industry transformation and upgrading.

II. Internationally renowned manufacturers of square-bottom valve cement bag production equipment

1. Windmöller Group (Germany)

Wiedehaus, a German company, is a global leader in flexible packaging equipment, and its CONVERTEX series of automated square bottom valve bag making lines are renowned in the industry. This equipment is specifically designed for the production of AD proTex® valve bags and is known for its unparalleled speed and efficiency .

The CONVERTEX series offers two configurations: SL (packaging bag production line) and CL (cement production line). The CL 140 model is specifically optimized for cement bag production, with a maximum production speed of 140 bags/minute . The specifications cover bag width of 44-51cm and bag length of 44-65cm, which can meet the daily needs of large-scale cement production enterprises.

A key feature of Widhall equipment is its highly advanced and patented optional add-ons , such as the NANOTEX CYCLO nanopore device, which maximizes the breathability, dust retention, and residual strength of AD proTex® bags, delivering unprecedented performance. Shaanxi Baihong Ouli Plastics Co., Ltd. has adopted this production line, which has demonstrated excellent stability and production efficiency in actual use.

2. Other high-end European brands

Besides Germany's Wiedehold, several other European companies specialize in manufacturing equipment for square-bottom valve-type cement bags, such as Italy's SMI Group and FIM Group. These companies' equipment is characterized by a high degree of automation and mature, reliable technology , but its price is relatively high, making it more suitable for large-scale production enterprises with high-end needs.

III. Major Domestic Manufacturers of Cement Bag Production Equipment with Square Bottom Valve Opening

1. Zhejiang Tianfeng Plastic Machinery Co., Ltd.

Zhejiang Tianfeng Plastic Machinery Co., Ltd. is a well-known domestic manufacturer of plastic machinery. Its TF-600 square bottom valve bag making machine enjoys a good reputation in both domestic and international markets. This equipment is specifically designed for PP woven bags, employs a high-precision control system , and can stably produce square bottom valve bags of various specifications.

Tianfeng Machinery's cement bag making machine is easy to operate and labor-saving , featuring automatic printing, automatic shifting and M-shaped edge folding, automatic valve-shaped serrated knife hot cutting, automatic counting, and batch alarm information. The maximum bag width can reach 1200mm, and the output is between 30-100 meters per minute, meeting the needs of medium-sized cement bag manufacturers.

2. Changzhou Hengcheng Plastic Machinery Co., Ltd.

Changzhou Hengcheng Plastic Machinery Co., Ltd. is one of the pillar enterprises in China's plastic weaving machinery manufacturing industry, and its products are sold to more than 60 countries and regions at home and abroad. The company has fixed assets of more than 80 million yuan , a building area of ​​15,000 square meters, and the main components are all manufactured using first-class CNC machining centers.

Hengcheng Machinery's HC-600 square bottom valve bag making machine adopts hot air sealing technology and is the first plastic woven bag bottom gluing machine in China. This equipment can produce square bottom valve bags with widths of 350-600mm and lengths of 450-910mm, and bottom widths ranging from 80-180mm, offering strong adaptability. The company boasts a complete product chain, from high-speed flat film drawing machines to flat cam circular looms, automatic cutting and sewing machines, and automatic square bottom valve bag making machines, providing customers with one-stop solutions.

3. Anhui Mingguang Ruisheng Machinery Co., Ltd.

Anhui Mingguang Ruisheng Machinery Co., Ltd. is a manufacturer of mixers and blenders integrating R&D, production, and sales. They also produce fully automatic powder packaging machines. Their valve bag cement packaging machine uses a screw-driven forced feeding system and stepless frequency conversion speed control to improve speed and precision. Combined with multiple encryption and venting technologies, it successfully solves the valve bag packaging problem for fine and ultrafine powders with poor flowability, low bulk density, and high gas content.

This equipment boasts a weighing accuracy of ±(0.5-1.0) kg/bag, a bag weight qualification rate of 99%, and a single-mouth output of 15t/h. It features a compact structure and small footprint , making it an excellent choice for small and medium-sized enterprises that require both bag making and packaging equipment.

4. Anhui Hengruike Machinery Equipment Co., Ltd.

Anhui Hengruike Machinery Equipment Co., Ltd. also offers the HC-600 square bottom valve bag making unit, a new generation of plastic woven bag gluing machine that uses hot air sealing. It specializes in producing polypropylene laminated plastic woven bags with square bottom valves or open openings. The company's equipment emphasizes environmental performance and automation , making it suitable for small and medium-sized enterprises just entering the field of automated production.

IV. Featured Recommendation: Innovation and Development of Yideng Machinery

Among numerous domestic manufacturers, Yideng Machinery has demonstrated unique advantages in the field of square bottom valve cement bag production equipment thanks to its continuous technological innovation and comprehensive after-sales service .

1. Technological advantages

Yideng Machinery's square bottom valve bag production line integrates internationally advanced technology with localized design concepts. Utilizing a PLC control system and pneumatic filling technology , it achieves a filling accuracy of ±1% and a machine capacity of 240-420 bags/hour. The equipment is highly adaptable, handling bags weighing 5-50kg, with bag widths ranging from 300-600mm and bag heights from 300-900mm, meeting the diverse needs of different customers.

Unlike traditional mechanical weighing mechanisms, Yideng equipment adopts a brand-new electronic control design , eliminating vulnerable parts such as gates, weighing beams, sliding weights, and chucks. This reduces maintenance costs and improves production efficiency. This design approach significantly reduces the equipment's failure rate and maintenance costs.

2. Service Advantages

Yideng Machinery provides comprehensive after-sales service , including video technical support, online support, spare parts supply, on-site maintenance and repair services. The company promises that if equipment malfunctions during or after the warranty period, repair personnel will arrive on-site and begin repairs within 24 hours, eliminating any concerns for users.

3. Cost-effectiveness advantage

Compared to imported equipment, Yideng Machinery offers more affordable prices while maintaining excellent performance. For example, its products are priced significantly lower than imported equipment, providing a more viable investment option for small and medium-sized enterprises.

V. Selection Guide for Cement Bag Production Equipment with Square Bottom Valve Outlet

1. Select based on production scale

For large-scale manufacturers with an annual output exceeding 100 million bags, it is recommended to consider high-speed production lines from international brands such as German Wiedehold. Although the initial investment is large, the long-term operating costs are low and the stability is high. For medium-sized enterprises with an annual output in the tens of millions of bags, equipment from leading domestic brands such as Zhejiang Tianfeng or Changzhou Hengcheng can be selected, striking a balance between price and performance. For small or start-up enterprises, more cost-effective equipment, such as products from Yideng Machinery, can be considered to gradually expand production scale.

2. Select according to technical parameters

When selecting equipment, several key technical parameters need to be considered: production speed, bag-making precision, degree of automation, and energy consumption . For example, high-speed production lines can reach speeds of 100-140 bags per minute, while ordinary equipment ranges from 30-100 meters per minute. It's also important to consider whether the bag size range meets production requirements, such as bag length, width, and bottom width.

3. Select based on after-sales service.

The long-term stable operation of equipment relies on the manufacturer's technical support and service guarantees. When choosing a manufacturer, it is essential to examine their after-sales service network, response time, and technical support capabilities . Some excellent domestic manufacturers can already provide 24-hour response service and are equipped with remote video technical support, greatly improving problem-solving efficiency.

VI. Development Trends of Square-Bottom Valve Cement Bag Equipment

In the future, square-bottom valve cement bag production equipment will develop towards higher speeds, greater intelligence, and greener production . On the one hand, the production speed of the equipment is constantly improving, from the initial tens of bags/minute to the current 140 bags/minute or even higher; on the other hand, with the deepening of the Industry 4.0 concept, the level of intelligence and networking of the equipment will also continue to improve.

Green and environmentally friendly practices are another important development trend. With increasing global environmental awareness, the ability of equipment to produce recyclable and biodegradable packaging bags will become a crucial consideration. Some leading companies have already begun developing related technologies and equipment to adapt to changing market demands.

Choosing the right manufacturer for square-bottom valve cement bag production equipment requires comprehensive consideration of the company's production scale, investment budget, technical needs, and long-term development plans. International brands offer advanced technology and high stability, making them suitable for large enterprises; domestic brands such as Zhejiang Tianfeng and Changzhou Hengcheng offer high cost-performance and timely service, making them suitable for most small and medium-sized enterprises; while emerging companies like Yideng Machinery are becoming important market choices due to their innovative technologies and flexible services.

Regardless of which equipment supplier you choose, the key is to ensure that the equipment's technical performance matches your company's actual needs and that you can obtain continuous and reliable technical support and after-sales service. Only in this way can your investment maximize its benefits and help your company stand out in the fierce market competition.