With the development of e-commerce, express logistics and cross-border network retailing, express packaging has developed from simple auxiliary transportation materials to important consumer goods in logistics industry. Compared with cardboard boxes, plastic delivery bags are lightweight, waterproof, moisture-resistant and space-saver. They are widely used in shipping apparel, e-commerce retail goods, documents, small items and other fields.
For packaging manufacturers, traditional manual bag method has been unable to meet the requirements of mass production and standardized production. The rapid bag-making machine turns plastic film into a finished bags with uniform specifications and adopts automatic unwinding, conveying, sealing, cutting, coating, stamping and counting steps to improve production efficiency and minimize the error of manual operation.
This paper introduces the types of packaging bags produced by these machines and the key factors to consider when purchasing equipment, including operating principles, product varieties, equipment selection, application scenarios, etc.
What is a courier bag maker?
Express bagging machine is a special equipment for processing plastic film (such as PE) into express bags. Depending on the configuration, the machine can perform different processes, including heat sealing, cutting, tape application, stamping, folding and counting.
Basic production workflow typically involve:
Untangling the membrane
Film conveying and guide edge (alignment)
Film positioning and length control
Heat sealing or side.
Cut into individual bags
Automatic application of double sided adhesive tape or sealing adhesive
Stamping or adding special structural features
Inventory and collection of finished bags
Currently, the commonly used fast bags are low density polyethylene (LDPE), high density polyethylene (HDPE), low density polyethylene (LDPE) or multilayer co-extruded PE films. The combination of materials affects the flexibility, tear resistance and sealing performance of fast bags.
In terms of composition, a complete express bag-making machine generally includes winding system, guide system, traction system, sealing and cutting mechanism, bag-making mechanism, tape application system and control system.
Abstract: the core function of express bag-making machine is to continuously process rolled plastic film into express bag, which plays the role of sealing, waterproofing and protecting during transportation.
What kind of bags does express bag-maker mainly produce?
Different express delivery services have different requirements for the size of the bag, the method of sealing and the ability of protection. Therefore, express bag-making machine can be equipped with different functions according to the specific bag-making structure.
Standard Courier Bag
Standard courier bags are one of the most common products in the logistics and e-commerce sectors.
Key features include:
Lightweight and thin material;
Waterproof and moisture-resistant;
Relatively low costs
Suitable for mass production
Generally adopted self-adhesive seal design.
The bags are used to transport clothing, books, groceries and small retail items.
2. Self-Adhesive Courier Bags
Self-adhesive courier bags are characterized by the application of adhesive tape or hot melt adhesive at the opening; the user simply needs to strip the release liner to seal the bag.
Self-adhesive plastic bags reduce manual sealing time compared to standard open-top bags and are ideal for the e-commerce and logistics industries.
Some bagging machines can apply adhesive strips at the same time in the bagging process to improve continuity of production.
3. Dual-Adhesive Strip Courier Bags
Double tape courier bags are mainly used for e-commerce packaging that requires a return function.
It features two different adhesive bands at the opening:
The first belt is used for initial shipment seals.
The second allows consumers to reseal bags for returns.
This design eliminates the need for consumers to purchase additional packaging materials, making them valuable for industries such as apparel and e-commerce retail.
4. Tamper-Evident Courier Bags
The apparently damaged Tamper-evident courier bags were designed to prevent theft or unauthorized opening.
The main focus of these bags is not only carrying capacity, but also making sure any unauthorized opening leaves visible evidence.
Common design features include:
Vulnerable seals
Towing
Specialized adhesive seals
Reinforced bag bodies
They apply to documents, high-value goods and products requiring a high level of transport security.
Courier bag with Document Pouches
Some courier bags have a transparent pouch attached to the outside to store the following items:
Courier waybills
Invoices
Packing list
Shipping labels
Product Information
Equipment with additional laminating or attachment capabilities is required to manufacture these bags; therefore, the product structure should be determined before purchasing the machinery.
6. Foam Express Bag
Bubble courier bags contains an internal cushioning layer of bubble wrap in a standard plastic bag.
Key advantages over standard courier bags include:
Excellent buffering
Reducing impact of in-transit collisions
Suitable for small, fragile items
They are commonly used to packaging electronics, cosmetics, jewelry, precision parts and similar. It is worth noting that the production of Styrofoam packaging machine usually requires the composite of the foam and outer material, so the equipment configuration of Styrofoam packaging machine is different from the standard express packaging machine.
Summary: fast delivery machine is not limited to the production of standard courier bags, but can also be configured to produce self-adhesive bags, double-strap bags, tamper-proof bags, integrated document pouches, bubble bags, etc..
Main Operating Principles of a courier pouch machine
The core process of courier bag production is continuous feeding, positioning, sealing and cutting of plastic film.
First, the film enters the machine (roll form) through a winding device. The traction system controls the feed speed of the film, while the edge guide minimizes dislocations or wrinkles.
The film then enters the sealing and cutting zone. The machine places the film according to the pre-set length of the bag, forms the bag structure with a heat sealing or other sealing methods, and then cuts it to a specified size.
If a self-adhesive courier bags is produced, tape or release gasket is used at the mouth of the bag simultaneously.
Modern machines often use technologies such as PLC control, servo drives and photoelectric sensors, which allow digital control of bag length, cutting position and output. Some models also have automatic counting, stacking and printing capabilities.
How to Choose a Express Packer?
For investors and buyers, choosing a courier bag machine requires looking beyond price and determining configuration based on final product and scale of production.
1. Determine the type of bag to produce
Before buying, make the following points clear:
Standard courier bags and Automatic Adhesive Bag
Single and double tape
Requirements for tampering with salient features
Requirements for integrated document pouches
Making bubble mailboxes
color printing requirements
Different product structures require different equipment capabilities.
2. Identification of thin film materials;
Identify the type of material the machine can handle, such as:
LDPE
HDPE
LLDPE
Multilayer co-extruded PE film
If you plan to use biodegradable or specialized composites, check with the device manufacturer beforehand for compatibility.
3. Production capacity based on order volume
If the focus is on small orders, you can choose to configure the relatively simple drive. If the target customer is a large e-commerce company, logistics firms or wholesale packaging distributors, key factors to assess include:
Continuous operation capability
Bagging speed
Level of automation
Waste control
Multi-lane production capability
Some two-lane machines can produce two rows of bags at a time to increase output per unit of time.
4. Focus on seal quality
Delivery bags must be able to withstand tension, compression and friction during transport, so seal strength is critical.
When shopping, it is recommended to note the following:
Thermal stability
Temperature control precision
Seal width
Adaptability to different film thicknesses
Summary: the key to selecting express bagging machine is not simply to pursue high speed, but to adjust the equipment's bag style, material compatibility, production capacity and automation features of the equipment according to actual order requirements.
What are the factors affecting the investment cost of express bagging machine?
There is no uniform price for express bagging machines, and investment costs vary widely depending on equipment configuration.
Key influencing factors include:
Width and length ranges cloth bags
Single-wire and two-wire structures
Mechanical automation level
servo drives exist
Including automated tape applications
Requirements for printing functions
automatic stacking requirements
Production of specially shaped bags
Therefore, instead of simply comparing offers from different manufacturers, investors should calculate the combined cost of production per unit of product.
Key comparisons to consider:
Actual output (Equipment investment + labour costs + waste of raw materials + energy consumption + maintenance costs)
This approach can better assess the the equipment's long-term economic viability.
What are the main industries in which express bag makers are used?
The downstream market of express bagging machines is mainly concentrated in e-commerce logistics and soft packaging sectors.
E-commerce industry
Applicable to:
Clothing
Footwear
Annex I.
Life essentials
Small electronic products
Lightweight courier bags help reduce the usage of packaging and transport weight.
Express logistics industry
Logistics companies require a large number of standardized bags, which requires high production efficiency, product consistency and supply capacity.
Cross-border e-commerce
Long-distance cross-border transport requires higher water resistance, tear resistance and sealing reliability. Therefore, multi-layer co-extruded materials and reinforced bag structure have obvious advantages. Packaging manufacturers
For professional packaging manufacturers, express packaging machine is an important component of the soft packaging production line, according to specific customer orders, can produce different sizes, different printing design, different sealing structure.
Abstract: express packaging machine mainly serves e-commerce, express logistics, cross-border e-commerce, plastic packaging manufacturing and other industries, market demand and logistics logistics packaging volume is closely related.
Sample
Frequently Asked Questions
1. What are the raw materials for courier bag?
Common raw materials are low density polyethylene (LDPE), high density polyethylene (HDPE), low density polyethylene (LDPE) and multi-layer co-extruded PE films. Specific materials are determined according to the strength, water resistance and cost of the cloth bag.
2. Can a single express bag maker produce bags in different sizes?
Generally, yes. By adjusting the length of the cloth bag, film width and related equipment parameters, various sizes of cloth bag can be produced, but the specific size range depends on the type of equipment.
3. Can a courier bag maker make plastic bags?
Yes. ' Specialized equipment can be equipped with automatic adhesive application system, production of self-adhesive courier bags or double adhesive strip bag and other products.
4. Can courier bags produce printed bags?
They can handle pre-printed film. Depending on configuration, some production lines can also incorporate online printing capabilities to produce packages with company logos, text or logistics information.
V. Do standard courier bags and foam courier bags require the same equipment?
Not necessarily. Standard courier bags are typically made directly from PE film, while bubble courier bags typically require layered bubble wrap, which puts more demands on equipment structures and aids.
6. How many operators do express bag makers need?
It depends on the level of automation and the configuration of the production line. Highly automated equipment reduces the need for manual labour; however, actual staffing requirements must also take into account tasks such as loading of raw materials, packaging of finished products, quality inspection and equipment maintenance.
7. What are the most important parameters when buying a express bag maker?
Instead of simply comparing theoretical maximum speeds, it is recommended to focus on the size range of the cloth bag, suitable film thickness, production speed, sealing method, adhesive application method, degree of automation, equipment stability, etc.
Conclusion:
With the development of e-commerce and cross-border e-commerce, courier bags are still an important product in flexible logistics packaging industry. Fast bag machine to achieve film feeding, sealing, gluing, counting and other automation. Standard courier bags, self-adhesive bags, double-strap bags, forgery-proof bags and some types of composite courier bags can be produced.
For investors entering the courier packaging industry or manufacturers looking to expand capacity, we recommend targeting the market and packaging types first. Equipment selection is then based on factors such as raw materials, order volume, automation levels required and projected production.
If you are looking for a courier bag molding machine, automated production equipment or custom production line, please provide information such as the type, size, material and target production volume (tons) of the express bag you require. We can then assist you choose the right equipment based on configuration and production process requirements.
