Solution 1: Single Screw Blown Film Machine (Budget-Friendly / Entry-Level Choice)

For businesses with limited budgets or those newly entering the fruit and vegetable bag production field, the single screw blown film machine is an economical and practical entry-level choice. Single-layer blown film machines have been the most commonly used type for PE bag producers. For fruit and vegetable bag producers (which mainly use virgin materials), the single-layer blown film machine has been the most popular option due to its lower machine cost and simple operation.

Application Scenarios

• Small to medium-sized fruit and vegetable bag manufacturers
• Lower output requirements (25-120 kg/h)
• Mainly producing thinner fruit and vegetable bags (6-18 microns)
• Mainly using virgin materials
• Limited initial investment budget

Core Configuration Recommendations

Optional Equipment

• Twin Die Head Design: Convert single screw machine to twin head, one extruder supplies two dies, producing two film rolls simultaneously, saving electricity and cost
• Automatic Roll Change: No manual cutting required; increased intelligence greatly reduces labor cost – one operator can monitor 5 or more machines
• Weight Control System: Automatically controls material feeding weight and haul-off speed for precise film thickness control

Advantages

• Low investment cost, high cost-performance ratio
• Simple operation and maintenance, lower operator requirements
• Compatible with multiple materials including HDPE, LDPE, and LLDPE
• Excellent for thin fruit and vegetable bags (6-18 microns)

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.

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). Through multi-layer co-extrusion, the film's physical strength is significantly enhanced.

Application Scenarios

• Medium to large-sized fruit and vegetable bag manufacturers
• Higher output requirements (150+ kg/h)
• Higher requirements for film strength, freshness preservation, and quality
• Desire to use recycled materials to reduce raw material costs
• Focus on long-term operating cost efficiency

Core Configuration Recommendations

Optional Equipment

• Automatic feeding system
• Color masterbatch metering system
• Rotating die head
• Bubble cage
• Corona treater (for subsequent printing)
• Embossing roller
• EPC (Edge Position Control)
• Tension controller

Core Advantages

1. Significantly Improved Film Strength: ABA three-layer film is stronger than film produced by single-layer extruders, with notably enhanced puncture resistance and tensile strength
2. Significant Material Cost Savings: The outer layer (A) uses virgin material for a smooth and shiny surface; the middle layer (B) can use a higher proportion of recycled material and calcium carbonate (CaCO3), substantially reducing raw material costs. ABA blown film machines allow plastic film manufacturers to use more recycled material and calcium carbonate compounds to produce stronger plastic films
3. Customizable Film Properties: The ABA layer structure optimizes barrier properties, mechanical strength, and surface characteristics. The outer layer (A) and middle layer (B) can be customized to meet different requirements such as puncture resistance, sealability, and transparency
4. High Output and Efficiency: Advanced automation and control systems minimize setup time and maintenance requirements
5. Formula Flexibility: Supports different polymer formulations for each layer, suitable for various applications

Fruit and Vegetable Bag Making Equipment Configuration

Fruit and vegetable bags come in three main final product forms: flat bags, vest/T-shirt bags, and bags on roll (perforated roll bags). Different bag types require different bag-making equipment.

I. Flat Bag Making Equipment

Flat bags (also called flat cut bags) are the most basic bag type, widely used for packaging fruits, food, clothing, textiles, and daily necessities.

Recommended Configuration: Flat Bag Making Machine

• Function: Heat-sealing bottom bag making, with servo motor for high-speed operation
• Key Configurations: Computer-controlled length setting system, photoelectric eye tracking (for printed bag pattern positioning)
• Applicable Materials: HDPE, LDPE, LLDPE
• Optional Function: Perforated roll function (can also produce flat bags on roll)

II. Vest/T-Shirt Bag Making Equipment

Vest bags (also called T-shirt bags, shopping bags) feature handle cutouts and are widely used in supermarkets, wet markets, and other retail settings.

Recommended Configuration: Blown Film Machine + Heat Sealing Cold Cutting Bag Making Machine + Hydraulic Punching Machine (Basic Type)

• Production Line Flow: Blown Film Machine → Bag Making Machine → Hydraulic Punching Machine
• Equipment Features: Low total investment, easy operation, fully computer-controlled
• Bag Making Machine Types: Heat sealing cold cutting type or heat sealing hot cutting type
• High-End Configuration: Dual-channel heat sealing hot cutting bag making machine, can produce two printed bags simultaneously

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 supermarket fresh produce sections, bulk food, and similar applications.

Recommended Configuration: Computer-Controlled Perforated Roll Bag Making Machine

• Function: Can produce printed or non-printed bags on roll, with dual-line production capability
• 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

Bag Type Equipment Comparison

Blown Film Machine Solution Comparison at a Glance

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 → Choose ABA Co-extrusion Blown Film Machine + automated bag making equipment – higher film strength, lower material costs, better long-term returns
• 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