...
Types of Bag on Roll Machines
August 14, 2025

Types of Bag on Roll Machines

Whether you’re in the business of manufacturing trash bags, grocery bags, or specialty packaging, bag on roll machines are the heart of your operation. These powerful pieces of equipment automate the production of bags, significantly increasing efficiency and output. But with so many options on the market, how do you choose the right machine for your specific needs?

This guide will break down the different types of bag on roll machines, explain their unique features, and help you understand how to make the best choice for your business.

Types of Bag on Roll Machines

CW-1000PR+C2 Fully Automatic Bottom Sealing Machine For Bag-on-roll With Core and Without Core
Bag on roll machines can be categorized in several ways, primarily by their sealing method, the type of bag they produce, and their level of automation. Understanding these distinctions is key to selecting the perfect machine.

By Bag Sealing Method

The sealing method determines the structure and strength of the bag’s bottom.

  • Bottom Sealing Bag on Roll Machine: This is the most common type. The machine seals the bottom of the bag in a straight line. This method is ideal for producing T-shirt bags, shopping bags, and general-purpose garbage bags. The bottom seal provides a strong, reliable base for carrying a variety of goods.
  • Star Sealing Bag on Roll Machine: This machine creates a unique star-shaped seal at the bottom of the bag. This design is excellent for garbage bags as it distributes the weight more evenly and eliminates the risk of leaks at the corners. It allows the bag to stretch and expand into a round shape when filled, maximizing its capacity and making it more tear-resistant than a standard bottom seal.
  • Side Sealing Bag on Roll Machine: Instead of sealing the bottom, this machine seals the sides of the bag. It’s typically used for producing smaller bags, such as those for food packaging, laundry, or other lightweight items. The side seals create a clean, flat bottom and are often used for HDPE/LDPE bags that require a high degree of transparency or a specific aesthetic.

By Bag Type

The machine you choose will often be specialized for a particular kind of bag.

  • Garbage Bag on Roll Machine: These machines are specifically engineered to produce robust and tear-resistant trash bags. They often include features for perforating the bags for easy tearing and can handle thicker materials. Many of these machines use the star sealing method for added strength and leak resistance.
  • Drawstring Bag on Roll Machine: A more advanced type of machine that not only seals the bag but also inserts a drawstring. The drawstring provides a convenient way to close the bag, making it a popular choice for kitchen bags and laundry bags. These machines are often more complex and require a higher level of precision.
  • HDPE/LDPE Bag on Roll Machine: While many machines can handle both materials, some are optimized for either High-Density Polyethylene (HDPE) or Low-Density Polyethylene (LDPE). HDPE bags are typically thinner, crinklier, and stronger than LDPE bags of the same thickness. LDPE bags are softer, more flexible, and transparent. Choosing a machine that can efficiently process the material you’re using is crucial for quality and speed.

By Automation Level

The level of automation dictates the amount of manual labor required.

  • Fully Automatic Bag on Roll Machine: These are the most advanced machines. They handle every step of the process, from feeding the film to sealing, perforating, and rolling the final product. A fully automatic bag on roll machine requires minimal supervision and is ideal for large-scale production, offering the highest efficiency and lowest labor costs.
  • Semi-Automatic Bag on Roll Machine: These machines handle the core functions but may require an operator to perform certain tasks, such as loading the film or removing the finished rolls. They are a cost-effective solution for small to medium-sized businesses or those with specific production needs that require some manual oversight.

Special Features & Advantages

Modern bag on roll machines from CHOVYTING offer a range of features that enhance their performance:

  • Servo Motor Control: Provides precise control over the feeding and sealing processes, leading to consistent bag length and high-quality seals.
  • Touch Screen Interface: An intuitive interface makes it easy for operators to set parameters, monitor production, and troubleshoot issues.
  • Automatic Tension Control: Ensures the film is fed at a consistent tension, preventing wrinkles and breaks.
  • Multi-Lane Production: Our advanced machines can produce multiple bags at once, dramatically increasing output.

How to Choose the Right Bag on Roll Machine

Choosing the right machine involves considering several key factors:

  1. Bag Type: What kind of bag do you need to produce? (e.g., garbage bags, T-shirt bags, drawstring bags)
  2. Material: Will you be using HDPE, LDPE, or a blend?
  3. Production Volume: How many bags do you need to produce per hour or per day? This will help you decide between a semi-automatic and a fully automatic machine.
  4. Budget: What is your investment capacity?
  5. Floor Space: Do you have enough space for the machine’s footprint?

cw-1000prc2-fully-automatic-bottom-sealing-machine-for-bag-on-roll-with-core-and-without-core-8

Why Choose CHOVYTING

At CHOVYTING, we specialize in designing and manufacturing high-quality bag on roll machines that are both robust and reliable. Our machines are built with precision engineering and the latest technology to ensure maximum efficiency and consistent product quality.

When you choose a CHOVYTING machine, you’re not just buying equipment; you’re investing in a long-term partnership. We offer comprehensive customer support, from installation and training to maintenance and spare parts, to ensure your operations run smoothly for years to come.

Conclusion

Choosing the right bag on roll machine is a critical decision that can significantly impact your company’s productivity and profitability. By understanding the different types—from bottom sealing to star sealing and fully automatic models—you can make an informed choice that perfectly fits your business goals.

Ready to find the perfect machine for your needs? Contact us today to learn more about our full range of bag on roll machines and how CHOVYTING can help you grow your business.

GET A QUOTE NOW