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In today’s highly developed express delivery and logistics industry, DHL bag making machines have become key equipment for e-commerce and logistics companies to enhance their competitiveness.
As a professional buyer, you need more than just a machine that produces bags; you need a smart solution that enables efficient, stable, and customized production. This article will take you on an in-depth exploration of the core processes and key purchasing considerations for this type of equipment.
High-quality DHL bag making machine is backed by a series of precisely coordinated process units. Understanding these processes is the first step in making the right purchasing decisions.
The production process begins with feeding. Large-diameter film rolls (typically up to 1000mm) are mounted on an automatically hydraulically loaded unloading frame. The key here is constant tension control. If the film is inconsistent in tension, subsequent sealing and cutting will be impossible to be precise.
Even more sophisticated is the EPC automatic correction device. Consider that film can easily drift at high speeds, but with a correction system equipped with sensors like the German SICK photoelectric sensor, it can “monitor” the film edge in real time and fine-tune its position, ensuring that the material always enters the next process in a perfectly straight line. This is like equipping a high-speed car with an automatic steering function, laying a solid foundation for every subsequent action.
Side sealing is the key to express bag forming and also the most technologically advanced step. Traditional clutch/brake controls have been gradually phased out, replaced by servo motor drive systems. The benefits of servo systems are obvious: smooth and stable machine transmission, automatic bag length adjustment via computer buttons, and incredibly precise bag output length, resulting in less waste.
One noteworthy detail is the sealing knife design. High-end models employ concealed heating elements and a flip-type heavy-duty side sealing knife, ensuring stable temperature and easy cleaning. Some also feature a water circulation cooling system to prevent overheating and sticking at the seal, ensuring each seal is flat, secure, and free of drag marks.
Express delivery bags are more than just sealing three sides. The easy-tear opening and hanging holes are all completed in one go on the punching unit. Crucially, the bottom fold (accordion edge) allows the bag to hold more items. Special guide plates and roller designs reduce friction and wrinkles, while the U-shaped bottom forming process ensures a flat and aesthetically pleasing bottom. These details directly determine whether your bags run smoothly or choppy on the DHL sorting line.
After precise sealing and forming, individual courier bags are cut. But the story doesn’t end there. Modern bag-making machines use an automatic bag-collecting and feeding system. When a certain number of bags are collected, the collection table moves automatically, achieving continuous stacking and counting. This not only frees up hands but, more importantly, provides accurate quantity data for subsequent packaging and shipping.
When you sit in your office, looking at production reports, your primary concern is undoubtedly how much value your equipment can create for you.
High-Speed Production:
Speed is a direct indicator of equipment capability. Chovyting Machinery’s High speed DHL bag-making machine boasts production speeds far exceeding what they used to be. It features a DHL bag-making speed of 70pcs/min, a longitudinal sealing knife structure, and a newly designed side-sealing water circulation cooling system.
Automation Reduces Labor:
The Secret to Cost Reduction and Efficiency Improvement: The higher the degree of automation in a bag-making machine, the lower its reliance on manual labor in manufacturing. Features such as “automatic tension control,” “automatic deviation correction,” “automatic counting,” and “automatic stacking” free operators from tedious monitoring tasks. Previously, one person might need to monitor two machines; now, one person can easily oversee a production line. A medium-sized packaging and printing company reported that after upgrading to a fully automated DHL bag making machine, they reduced on-site manpower by 70%, and the product scrap rate also decreased significantly due to reduced human intervention.
Intelligent Control:
Imagine being able to set all production parameters through an intuitive touchscreen.
| Customized dimensions | Range of options | Examples of practical application scenarios |
| Material Compatibility | PE、PP、OPP、CPP、POF、 Biodegradable materials, multi-layer co extruded films | Choose anti-static PE film for electronic product packaging |
| Bag type and size | Bag width 250-700mm, bag length 250-1010mm | Produce small-sized flat bags for document delivery or three-dimensional organ bags for large bedding items. |
| Sealing technology | Hot melt adhesive spraying, direct heat sealing, ultrasonic sealing | Hot melt adhesive technology ensures that even in low-temperature environments, the seal of the bag remains firm and does not burst. |
| Printing and Branding | Electric eye printing tracking, multi-color printing, customized logo | Exquisite printing not only enhances brand image, but also e-commerce logos and “easy to tear” logos can improve user experience. |
| special function | Confidentiality bag production, easy to tear thread, hanging ear holes | For sending invoices or confidential documents, the confidential bag function is a necessary option. |
The key to procurement decisions lies in whether equipment can integrate into existing production lines. Chovyting Machinery’s customized solutions not only offer standard models but also allow for targeted adjustments to the die-cutting dimensions and tension control systems of bag-making machines based on your raw material characteristics, workshop layout, and production capacity requirements.
We ensure that you are not buying a generic machine, but a production unit that seamlessly integrates with your supply chain, allowing the equipment to operate at maximum efficiency from day one.
Choosing the right partner is half the battle won in your equipment purchase. Faced with numerous manufacturers on the market, how do you choose?
Don’t just believe the salesperson’s verbal promises. Ask to see production videos of the equipment, visit an operational factory, or request detailed mechanical test reports. A confident manufacturer will be happy to showcase their technical capabilities. Check their client list to see if there are companies of similar size or industry to yours.
The value of a machine is often reflected in the details. Is the motor a servo motor? Which company makes the PLC? Or is it just a common domestic brand? The brands of core components directly determine the stability and lifespan of the equipment. Good manufacturers will clearly list the brands of key components in their specifications.
Machines inevitably require maintenance. At this time, the manufacturer’s service is crucial. Do they offer online support? How long does it take for an engineer to arrive at your factory for complex problems? What is the warranty policy—is it a full machine warranty or a warranty for partial components? A manufacturer that offers lifetime technical support is clearly more trustworthy than one that sells equipment and then ignores you.
Your business is evolving. Today, you might only produce simple PE bags, but tomorrow, you might need to produce eco-friendly bags with adhesive strips. Does the equipment you choose support the later addition of folding devices, ultrasonic devices, or hot-melt adhesive machines? Modularly designed machines allow for greater flexibility in your future business expansion.
Choosing the right DHL bag maker is essentially choosing a powerful heart for your logistics chain. It’s not just about producing high-quality packaging more efficiently and at a lower cost, but also about enhancing your brand image through customized packaging and standing out in fierce market competition.
Let Chovyting Machinery be your most reliable partner. Your efficiency revolution starts today.
Q: DHL Bag Making Machine Vs Ordinary Bag Making Machine
A: The core difference lies in process adaptability. DHL express bags typically require hot melt adhesive or pressure-sensitive adhesive sealing, not simple heat sealing. Therefore, dedicated DHL bag making machines integrate a hot melt adhesive spraying device, which can precisely control the temperature, width, and position of the adhesive strip to ensure that the express bag will not burst during transportation. This is completely different from the bag making process of ordinary shopping bags.
Q: How To Balance High Speed And Sealing Strength?
A: This depends on the design of the equipment’s heat sealing system. High-end models use dual-cylinder drive and double-sided heating technology, combined with precise temperature control, to provide sufficient and stable heat sealing pressure and time even at high speeds. Meanwhile, designs like water circulation cooling systems can quickly cool and set after sealing and cutting, ensuring both speed and a strong and flat seal.
Q: I Mainly Produce Biodegradable Express Bags. Can My Existing Bag Making Machine Be Used?
A: Most modern fully automatic bag-making machines are compatible with biodegradable materials by adjusting parameters, but you need to be careful. The melting point and tensile properties of biodegradable materials differ from traditional PE, so it’s best to confirm with the manufacturer whether the equipment can handle bio-based materials such as PLA and PBAT, and whether specific screw or sealing knife temperature settings need to be changed. Choosing a machine with strong material compatibility is crucial.
Q: How Long Does The Changeover Time Take? Is Frequent Size Change Troublesome?
A: Changeover time varies depending on the equipment, but modern servo-driven equipment has greatly simplified this process. With computer numerical control, the operator only needs to input new bag length, width, and other parameters on the touchscreen, and the machine will automatically adjust; the entire changeover process may only take a few minutes. Traditional equipment relying on mechanical gear adjustments may take up to half an hour or even longer.
Q: Besides Equipment Itself, What Other Costs Need To Be Considered?
A: In addition to the base price of the equipment, you also need to consider several upfront and operating costs. These include installation and commissioning fees, and operator training fees. During operation, energy consumption, replacement costs of vulnerable parts (such as sealing blades and rubber rollers), and the cost of compressed air supply all need to be included in the budget.
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