Solution 1: Single Screw Blown Film Machine (Budget-Friendly / Entry-Level Choice)
For businesses with limited budgets or those newly entering the garbage bag production field, the single screw blown film machine is an economical and practical entry-level choice. Single-layer blown film machines are the mainstream choice for garbage bag production.
Application Scenarios
- Small to medium-sized garbage bag manufacturers
- Medium output requirements (35-150 kg/h)
- Mainly producing conventional thickness garbage bags (20-100 microns)
- Using mixed virgin and recycled materials
- Limited initial investment budget
Core Configuration Recommendations
| Configuration Item | Recommended Specification |
|---|
| Screw Diameter | 50-80mm |
| L/D Ratio | 28:1 to 30:1 |
| Screw Material | 38CrMoALA alloy steel or high-quality alloy steel, nitrided and precision-machined |
| Main Motor Power | 11-37kW (depending on output) |
| Output Range | 35-150 kg/h |
| Film Fold Width | 300-1200mm |
| Film Thickness | 0.008-0.15mm |
| Control System | Full variable frequency drive + optional PLC control |
| Winding System | Single or double winding |
Optional Equipment
- Single Screw with Twin Die Heads: One extruder supplies two die heads, producing two film rolls simultaneously, saving electricity and cost
- Auto Feeding Loader: For automatic material feeding
- Color Masterbatch Dosing Unit: For precise color ratio control
- Rotating Die Head: Die head can rotate 360 degrees, enhancing film strength and uniformity
- Corona Treater: To increase film surface tension for better printing
- Embossing Roller: To enhance film texture
- Automatic Roll Change: No manual cutting required, reducing labor cost
Advantages
- Low investment cost, high cost-performance ratio
- Simple operation and maintenance, lower operator requirements
- Compatible with multiple materials including HDPE, LDPE, and LLDPE
- Can use virgin material, recycled material, and calcium carbonate (CaCO3)
- Sufficient efficiency for general garbage bag production
Solution 2: ABA Co-extrusion Blown Film Machine (Cost-Effective / Upgrade Choice)
For businesses pursuing higher film quality, lower production costs, and greater output, the ABA three-layer co-extrusion blown film machine is the ideal choice. Although single-layer blown film machines are highly efficient for general plastic bag production, ABA co-extrusion machines offer advantages over single-layer machines for thicker garbage bags (20-100 microns) or products requiring higher strength and toughness.
What is an ABA Blown Film Machine?
The ABA blown film machine uses three-layer co-extrusion technology with a film structure of: outer layer (A) + inner layer (B) + outer layer (A). Two extruders supply material to the three-layer die head, with one main extruder supplying both outer layers (A) and the other supplying the middle layer (B). Multi-layer co-extrusion improves the film's physical strength.
Application Scenarios
- Medium to large-sized garbage bag manufacturers
- Higher output requirements (40-400+ kg/h)
- Higher requirements for film strength, toughness, and quality
- Desire to use high proportions of recycled material and calcium carbonate to reduce raw material costs
- Large and stable garbage bag orders
- Focus on long-term operating cost efficiency
Core Configuration Recommendations
| Configuration Item | Recommended Specification |
|---|
| Screw Configuration | Twin screw (e.g., 45×2, 55×2, 65×2) |
| L/D Ratio | 30:1 |
| Die Head Structure | ABA three-layer spiral mandrel type co-extrusion die head |
| Main Motor Power | 11kW×2 to 37kW×2 (depending on output) |
| Output Range | 40-400+ kg/h |
| Max Film Width | 500-2000mm |
| Film Thickness | 0.008-0.15mm |
| Control System | PLC control + variable frequency drive |
| Winding System | Automatic single or double winding |
Core Advantages
- Significantly Improved Film Strength: Three-layer co-extrusion film is stronger, particularly suitable for garbage bags that need to bear heavy loads
- Significant Material Cost Savings: The outer layer (A) uses virgin material for a smooth and shiny surface; the middle layer (B) can use up to 70% recycled material or calcium carbonate (CaCO3), substantially reducing raw material costs
- One Less Extruder: ABA machines have one less extruder than ABC machines, offering better economic efficiency
- High Output and Efficiency: Advanced automation and control systems minimize setup time and maintenance requirements
- Formula Flexibility: Supports different polymer formulations for each layer
- Environmental Sustainability: Effectively utilizes recycled materials, aligning with global environmental trends
Solution 3: HDPE Ultra-High Speed Blown Film Machine (High Capacity / Large-Scale Choice)
For large-scale garbage bag manufacturers pursuing maximum capacity and efficiency, the HDPE ultra-high speed blown film machine is the ideal choice.
Application Scenarios
- Large-scale garbage bag manufacturers
- Extremely high output requirements
- Mainly producing HDPE garbage bags
- Pursuing economies of scale
Core Configuration Recommendations
- Applicable Materials: HDPE, LDPE
- Applications: Garbage bags, shopping bags, surface protection film, industrial packaging film, etc.
- Optional Equipment: Rotating die base, haul-off rotating device, auto feeding loader, folding device, embossing device, automatic roll change device, etc.
Garbage Bag Making Equipment Configuration
Garbage bags come in three main final product forms: flat bags, vest/T-shirt bags, and bags on roll. Different bag types require different bag-making equipment.
I. Flat Bag Making Equipment
Flat bags are the most basic bag type, widely used for household and commercial waste collection.
Recommended Configuration: Flat Bag Making Machine / Bottom Sealing Bag Making Machine
- Function: Heat-sealing bottom bag making
- Key Configurations: Computer-controlled length setting system, photoelectric eye tracking (for printed bag pattern positioning)
- Applicable Materials: HDPE, LDPE, recycled material
- Applications: Flat garbage bags, industrial cleaning bags
- Optional Function: Perforated roll function (can also produce flat bags on roll)
II. Vest/T-Shirt Bag Making Equipment
Vest bags feature handle cutouts for easy carrying.
Recommended Configuration: Automatic Vest Bag Making Machine
- Function: Heat-sealing bottom bag making, automatic "U" shaped handle punching in one operation
- Key Configurations: Computer control, photoelectric tracking
- Applicable Materials: HDPE, LDPE, recycled material
- Applications: Vest-style garbage bags
- Optional Function: Drawstring bag function
III. Bag on Roll (Perforated Roll Bag) Making Equipment
Bags on roll are supplied in roll form and torn off along perforation lines when used. They are widely used in hotels, offices, kitchens, and similar settings.
Recommended Configuration: Computer-Controlled Perforated Roll Bag Making Machine
- Function: Can produce printed or non-printed bags on roll
- Key Configurations: Photoelectric tracking for automatic feeding control, automatic temperature control, static eliminator, automatic counting and alarm
- Control System: Microcomputer control + stepper motor (optional servo motor), photoelectric length tracking
- Multi-Function Model: Dual-purpose machine for perforated flat bags on roll and perforated vest bags on roll
- Applications: Garbage bags on roll, hotel garbage bags, kitchen garbage bags
Special Configuration: 8-Fold Garbage Bag on Roll Making Machine
For businesses pursuing higher packaging density and transportation efficiency, the 8-fold garbage bag on roll making machine is a professional choice.
Recommended Configuration: Automatic 8-Fold Garbage Bag on Roll Making Machine
- Function: Produces 8-fold vest garbage bags and 8-fold flat garbage bags
- Key Configurations: Dual-lane bag making, automatic roll change, automatic counting
- Applicable Materials: HDPE, LDPE, biodegradable materials
- Applications: Mass production of garbage bags on roll
Printing Solution Configuration
Common printing requirements for garbage bags include single-color, two-color, and three-color printing.
Option A: Stand-Alone Printing Machine (Offline Printing)
Recommended Configuration: Stand-Alone Flexographic Printing Machine
- Applicable Materials: PE film
- Printing Colors: 1-6 colors available
- Applications: Garbage bags, vest bags, and other packaging
Option B: In-Line Printing Machine (Integrated Blowing & Printing)
Recommended Configuration: Blown Film & Printing Integrated Line
- Features: One production line for both film blowing and printing, saving labor and factory space
- Applicable Materials: LDPE, HDPE, LLDPE, etc.
- Printing Colors: 2-color, 3-color, 6-color, etc. available
- Applications: Garbage bags, vest bags, etc.
Blown Film Machine Solution Comparison at a Glance
| Comparison | Single Screw Machine | ABA Co-extrusion Machine | HDPE Ultra-High Speed Machine |
|---|
| Investment Cost | Low | Medium-High | High |
| Operating Cost | Medium | Low (significant material savings) | Low (economies of scale) |
| Film Strength | Standard | Significantly improved | High |
| Recycled Material Usage | Limited | High (up to 70%) | Medium |
| Output | 35-150 kg/h | 40-400+ kg/h | Extremely high |
| Suitable Thickness | 20-100 microns | 20-100 microns | Various thicknesses |
| Suitable Scale | Small to Medium | Medium to Large | Large |
Summary
- Limited Budget / Just Starting Out → Choose Single Screw Blown Film Machine + corresponding bag making machine – low investment, simple operation, meets basic production needs
- Pursuing Cost Reduction & Efficiency / Scaled Production / Using Recycled Material → Choose ABA Co-extrusion Blown Film Machine + automated bag making equipment – higher film strength, higher recycled material utilization, lower material costs, better long-term returns
- Pursuing Maximum Capacity / Large-Scale Production → Choose HDPE Ultra-High Speed Blown Film Machine – extremely high output, optimal efficiency
- Different Bag Types Require Different Bag Making Equipment: Flat bags need flat bag making machines; vest bags need bag making machines + punching machines; bags on roll need computer-controlled perforated roll bag making machines; premium bags on roll can use 8-fold bag making machines
