- All
- Product Name
- Product Keyword
- Product Model
- Product Summary
- Product Description
- Multi Field Search
| Quantity: | |
|---|---|
This high-speed flat bag making machine produces heat-sealed flat bags and bottom-seal bags from HDPE, LDPE, LLDPE, and PP film at 80-200 bags per minute. It handles film thickness from 0.01 mm to 0.10 mm and bag widths from 100 mm to 800 mm — covering produce bags, garment bags, bread bags, hardware packaging, refuse sacks, and general-purpose flat poly bags. Converters supplying supermarkets, food processors, garment manufacturers, hardware distributors, and industrial packaging users run this machine for medium-to-high-volume flat bag production where repeatable seal quality and consistent bag dimensions determine the customer's production line efficiency.
Produce bags / fruit & vegetable bags: Transparent LDPE flat bags at 0.01-0.03 mm thickness, 150-400 mm width — produced at 150-200 bags/min for supermarket and wet-market supply.
Garment packaging bags: Clear PP or LDPE flat bags at 0.03-0.06 mm, 300-600 mm width — for apparel folding and retail display packaging where bag clarity affects shelf appeal.
Bread & bakery bags: LDPE bottom-seal bags at 0.02-0.04 mm, 200-400 mm width — food-grade film with consistent seal integrity for freshness retention.
Hardware & parts packaging: Heavy-duty LDPE/LLDPE flat bags at 0.06-0.10 mm, 100-300 mm width — for screws, fasteners, and small parts requiring puncture resistance.
Refuse sacks & garbage bags: HDPE/LLDPE flat bags at 0.02-0.05 mm, 500-800 mm width — produced on-roll or loose-stacked for municipal and industrial waste management supply.
| Application | Bag Size Range | Material | Typical Output |
|---|---|---|---|
| Produce / fruit bags | 150-400 × 250-500 mm | LDPE 0.01-0.03 mm | 160-200 bags/min |
| Garment packaging | 300-600 × 400-800 mm | PP / LDPE 0.03-0.06 mm | 100-150 bags/min |
| Bread / bakery bags | 200-400 × 300-500 mm | LDPE 0.02-0.04 mm | 140-180 bags/min |
| Refuse sacks (large format) | 500-800 × 600-1000 mm | HDPE/LLDPE 0.02-0.05 mm | 80-120 bags/min |
Bag converters producing 500-3000 kg of flat bags per day who need consistent seal quality and bag dimensions across multi-shift operation. The PLC + touch screen HMI stores recipe parameters per bag SKU — seal temperature, seal dwell time, feed length, and stacking count are recalled by selecting the product name, not by operator manual adjustment.
Shops running multiple bag sizes per shift where changeover time directly affects daily output. Bag width adjustment from 100 mm to 800 mm, combined with programmable recipe storage, enables size changeover in 5-8 minutes — the operator selects the next SKU on the HMI and the machine recalls all parameters automatically.
Producers supplying retail chains and food processors where bag appearance and seal integrity are purchase specifications. Heat-seal bars with digital temperature control maintain ±2°C across the sealing width — eliminating the weak-seal and scorched-seal variation that manual temperature-dial machines produce between operators.
Contract manufacturers running PE and PP film on the same machine — LDPE seals at 120-150°C, PP seals at 160-180°C, and the digital temperature control with stored recipes switches between the two without trial-and-error adjustment on each changeover.
Startups producing under 300 kg of bags per day. A simpler bag-making machine with manual temperature control and mechanical feed costs 40-50% less and reaches payback faster at low volume. The PLC automation and servo drive premium pay back only above roughly 500 kg/day where recipe repeatability and changeover speed compound across multiple SKUs.
Shops producing exclusively T-shirt vest bags or handle-hole bags. This is a flat bag / bottom-seal machine — it does not have handle punch capability or the dual-seal station layout needed for vest bag production. For T-shirt bags, see our T-shirt bag making machines.
Producers running film above 0.10 mm thickness. The heat-seal system is optimized for 0.01-0.10 mm film. Above 0.10 mm, seal penetration time increases and the mechanical cycle rate must slow down — output drops below the machine's economic operating range. For heavy-gauge film above 0.10 mm, a specialized heavy-duty bag machine is needed.
Operations requiring cold-cut sealing (no-heat process). This machine uses conventional heat-seal and cut. For cold cutting — which suits high-speed thin-gauge LDPE and avoids burnt edges — see our cold cutting bag making machines.
Not sure if this machine matches your bag specifications? Send us three data points and we'll confirm fit and estimated output within one business day:
Your typical bag dimensions: width × length (mm)
Film material and thickness (e.g., LDPE 0.03 mm)
Your target daily output (bags/day or kg/day)
All process parameters — seal temperature, seal dwell time, feed length, bag count per stack, and production speed — are stored per SKU in the PLC and recalled by product name on the touch screen. On a manual-dial machine, the morning-shift operator sets the temperature dial to what they think is right for LDPE; the night-shift operator sets it differently. Same SKU, same film, different seal quality. PLC digital control with ±2°C accuracy eliminates this variability. Bag length is set by entering the number on the HMI, not by adjusting a mechanical stop with a wrench — the servo-driven feed positions the film to the programmed length on every cycle.
The sealing bar uses multi-zone cartridge heaters with independent thermocouple feedback per zone — maintaining temperature uniformity within ±2°C across the full 800 mm seal width. On single-thermocouple systems, the center of the bar runs hotter than the ends — bags sealed at the left edge of the bar have different seal strength than bags from the center. Multi-zone control eliminates this gradient. Seal temperature, dwell time, and cooling time are independently programmable — LDPE runs a shorter dwell at lower temperature; PP requires higher temperature with longer dwell. The parameters are stored per material type in the recipe library.
A servo motor drives the film feed rollers with closed-loop position control — bag length is determined by encoder counts, not by mechanical cam timing. On cam-driven mechanical feed machines, bag length drifts as the cam follower wears and as film slip varies with roll diameter. The servo system corrects feed position on every cycle based on actual roller rotation — maintaining bag length accuracy at ±0.5 mm regardless of line speed or roll diameter. When combined with an optional photoelectric registration sensor, printed film with registration marks is tracked and cut at the correct position automatically.
Free bag sample run — send us your film roll, receive finished bags and process data. We'll run your actual material on our demo machine and provide:
Sample bags produced at production speed from your film
Seal strength test data (tensile peel test across multiple bag samples)
Production speed measurement at your specific bag dimensions
Video of the run showing bag quality and stacking consistency
No cost. You ship the film roll; we cover everything else. Arrange your sample run here.
Seal strength variation between morning and night shifts. Different operators adjust the temperature dial differently — one runs LDPE at 135°C, the next at 150°C. The bag customer's QC catches weak seals from the cooler run or scorched seals from the hotter run, and rejects the batch. PLC digital control locks the seal temperature to the stored recipe — the operator selects "LDPE Produce Bag 200×350" on the HMI and the machine sets 140°C automatically. Every shift produces the same seal.
Bag length inconsistency as the film roll diameter changes. On mechanical-feed machines, film slip increases as the unwind roll gets smaller — the same feed roller rotation pulls less film at the end of a roll than at the start. Bags from the first 100 meters are 2-3 mm longer than bags from the last 100 meters of the same roll. Servo-driven feed with encoder feedback compensates for slip cycle by cycle — bag length stays within ±0.5 mm from full roll to core.
PP film sealing problems — temperature window too narrow for manual control. PP seals in a narrow 160-180°C window. At 158°C, the seal is weak. At 182°C, the film shrinks and distorts at the seal line. Manual temperature dials with ±10°C hysteresis swing through this entire window — producing mixed-quality bags. Digital temperature control with ±2°C accuracy stays within the PP sealing window consistently.
High reject rate on thin LDPE (0.01-0.02 mm) from seal sticking. Thin LDPE film melts through rapidly under excessive heat — the seal bar temperature that works for 0.04 mm film burns through 0.015 mm film. The recipe system stores different temperature and dwell parameters per film gauge — the operator selects the product, and the machine applies the correct thin-film parameters automatically instead of the operator guessing a lower temperature.
| Scenario | Material | Typical Output | Setup Notes |
|---|---|---|---|
| High-volume produce bag run (single SKU, 2-shift) | LDPE 0.015 mm | 180-200 bags/min | Recipe-locked parameters; auto stacker; minimal operator intervention |
| Mixed garment bag production (6-10 SKUs/day) | PP / LDPE 0.03-0.05 mm | 120-160 bags/min | Recipe switching per SKU; 5-8 min changeover; dual-recipe banks for PE and PP |
| Refuse sack production (large format, medium volume) | HDPE/LLDPE 0.03-0.05 mm | 80-120 bags/min | Longer feed stroke for 800-1000 mm length; reduced cycle rate for large format |
| Bread bag production (food-grade, consistent seal) | LDPE 0.025 mm | 140-170 bags/min | Digital temperature lockdown; seal inspection every 500 bags per food-safety protocol |
Film unwinding & tension control: The film roll mounts on the unwind shaft with adjustable brake. A dancer roller maintains constant web tension as roll diameter decreases — preventing stretching on thin gauge and wrinkles on wide film.
Servo-controlled film feeding: The servo-driven feed roller advances film to the programmed bag length. Feed length is set on the HMI and verified by encoder feedback per cycle.
Heat sealing: The heated sealing bar descends and applies controlled temperature (120-180°C) and pressure for the programmed dwell time. Multi-zone cartridge heaters with thermocouple feedback maintain ±2°C across the seal width.
Cutting & separation: The cutter blade separates the sealed bag from the web immediately after sealing. Cut position is synchronized with the seal line.
Bag collection & stacking: Finished bags are collected on the stacking table with programmable count per stack. When the preset count is reached, the stacker ejects and begins the next — continuous operation.
| Parameter | Specification |
|---|---|
| Bag Width | 100–800 mm |
| Bag Length | 150–1000 mm |
| Film Thickness | 0.01–0.10 mm |
| Applicable Material | HDPE / LDPE / LLDPE / PP |
| Production Speed | 80–200 bags/min |
| Total Power | 7–12 kW |
| Power Supply | AC 380V, 50Hz, 3-phase |
| Air Pressure | 0.5–0.6 MPa |
| Control System | PLC + Touch Screen HMI |
| Sealing Type | Heat Seal & Cut |
| Machine Weight | 2,000–4,000 kg |
| Overall Dimension (L×W×H) | Approx. 6,000 × 2,000 × 1,500 mm |
Location: Bangkok, Thailand — produce bag supplier
Machine: High-Speed Flat Bag Making Machine, PLC + HMI, servo feed
Bag product: LDPE produce bags, 0.02 mm × 250 × 400 mm, for supermarket fresh-produce sections
Before: 4 mechanical-dial flat bag machines. Combined output: ~380 bags/min. Seal reject rate: 6% (weak seals and scorched edges). 2 operators per shift adjusting temperature dials and mechanical stops between SKU changes.
After: 3 PLC-controlled machines replaced all 4. Combined output: 480 bags/min. Reject rate: 1.2%. 1 operator per shift. SKU changeover from 20 minutes (mechanical adjustment) to 6 minutes (recipe recall).
Payback: 11 months from output increase, labor reduction, and 4.8% material waste reduction.
15+ years manufacturing bag and film equipment in Jiangyin, Jiangsu — machines running in 30+ countries.
CE-certified electrical and safety systems on all export machines. Each ships with wiring diagrams, PLC backup, and spare parts catalog.
Pre-delivery FAT on every machine: We run your bag specifications at production speed before crating. Test data and video provided before dispatch.
2-year warranty on main drive components, 1 year on electrical. Critical spares (sealing bars, heaters, thermocouples, servo drives, sensors) stocked — shipped within 48 hours.
Remote video-guided commissioning as standard; on-site engineer available. Training covers recipe setup, seal parameter tuning, material-specific settings, and preventive maintenance.
HDPE, LDPE, LLDPE, and PP film from 0.01 mm to 0.10 mm thickness. LDPE seals at 120-150°C; PP requires 160-180°C. The digital temperature control stores separate parameter banks for PE and PP — switching between materials is a recipe selection, not a hardware adjustment. Not suitable for laminated multi-layer films, aluminum-coated films, or biodegradable films with low thermal stability.
Speed depends on bag length and film gauge. Short bags (150-300 mm) in thin LDPE (0.015 mm) reach 180-200 bags/min. Long bags (600-1000 mm) in thicker film (0.06-0.10 mm) run at 80-120 bags/min. The limiting factor is seal dwell time — thicker film needs longer heat penetration for a proper seal. We provide speed estimates for your specific bag dimensions during pre-sale review.
Yes, with the optional photoelectric registration sensor. The sensor reads printed marks on the film and the servo adjusts feed position to cut at the correct location. Registration accuracy is ±0.5 mm. For plain unprinted film, the sensor is not needed — the servo feeds to the programmed bag length directly.
Standard: 30-45 working days. Custom configurations: 45-60 working days. Sea freight: Southeast Asia 7-10 days, Middle East 15-20 days, Africa 20-30 days, South America 25-35 days.
Bag width and length range (min-max in mm), film material and thickness, target output (bags/min or kg/day), and whether bags require printing registration. Share your three most common bag SKUs — we'll configure for those and verify compatibility with the rest.
Yes. Each machine ships with one spare sealing bar set, two spare heater cartridges, and a recommended 12-month consumables list with part numbers. Reorder delivery within 48 hours for stocked items.
Sealing bar surface cleaning every 500 operating hours to remove polymer residue build-up. Thermocouple calibration check monthly. Heater cartridge replacement typically at 8,000-12,000 hours depending on operating temperature. The PTFE-coated sealing bar surface is a consumable — replacement every 3,000-5,000 hours depending on film type and additive content.
Training covers: HMI recipe setup and storage, seal temperature and dwell time tuning per material, bag length programming, stacker count setup, and daily inspection. Delivered to operators and maintenance staff separately. Written SOPs in English. Free refresher via video call within warranty.
Tell us your bag requirements — we'll configure and quote within 2 working days.
Bag dimensions: width range and length range (min-max in mm)
Film material and typical thickness (e.g., LDPE 0.02 mm, PP 0.04 mm)
Target output: bags/min or kg/day
Printed or plain film (registration sensor required for printed film)
Factory electrical supply: voltage, phase, frequency
