Stretch Film For Automatic Wrappers
Stretch Film For Automatic Wrappers from Foshan Opalus Adhesive Products Co., Ltd. is produced for pallet wrapping lines needing smooth feeding, controlled pre-stretch and reliable load containment. This category covers machine stretch film rolls for semi-automatic and automatic wrappers, not wrapping equipment. Width, thickness, roll weight, core size, cling and unwind behavior can be matched to pallet shape, wrapper tension and transport distance.
- Machine film rolls for semi-automatic and automatic pallet wrappers.
- Common width: 500mm, with custom slit width by carriage requirement.
- Cast LLDPE structure for clear, black or tinted pallet wrap film.
- Light, standard and heavy-duty gauges for different pallet loads.
- Key checks: pre-stretch ratio, puncture resistance, unwind tension and break rate.
- Used for warehouse dispatch, export pallets and high-frequency factory packing.
China Transparent Machine Stretch Wrap For Packing
Category Overview
Automatic wrapping does not forgive unstable film. A roll may break on a wrapper if the edge is uneven, the gauge varies or the cling side is not aligned with the film path. For machine pallet wrap, the key question is how the film feeds and holds the pallet after movement.
This category is built around film-roll selection. Packaging teams should confirm wrapper type, pre-stretch setting, pallet height, edge sharpness, product weight and storage condition. Sample approval should include normal-speed wrapping, corner tear observation, film tail holding and forklift handling.
Product Range / Covered Products
The range includes clear machine stretch film, black security wrap, power pre-stretch film, puncture-resistant heavy load film and lower-gauge film for regular cartons. Rolls can fit turntable wrappers, rotary arm wrappers and automatic lines with powered pre-stretch carriages.
Uniform cartons need clarity, cling and yield. Mixed cartons, trays or building material pallets need stronger puncture resistance. Export pallets should be approved by wrap pattern and transport risk, not thickness alone.
Product Series
| Product Series | Typical Use | Selection Note |
|---|---|---|
| Standard machine film | Regular carton pallets | Balanced cling, clarity and cost control |
| Power pre-stretch film | Powered roller carriages | Requires stable elongation and clean edges |
| Heavy load machine film | Irregular or export pallets | Confirm puncture resistance at corners |
| Black / tinted film | Security or product sorting | Check color consistency and label visibility |
Selection Guide
Start with the wrapper. Core-brake machines apply direct tension, so the film must resist neck-in and edge split. Power pre-stretch machines need stronger elongation consistency because the web is stretched between rollers before it reaches the pallet.
Then match the load. Light cartons may use lower-gauge automatic stretch wrap film when the machine is adjusted correctly. Heavy cartons, sharp corners and export pallets need a stronger grade, tested under actual speed and overlap. Record the setting, wrap count, roll direction and retained sample code.
Selection Comparison
| Selection Factor | Regular Pallets | Heavy / Irregular Pallets | Machine Check |
|---|---|---|---|
| Thickness | Lower gauge may fit | Stronger gauge or grade | Observe break rate |
| Pre-stretch | Moderate stretch | Controlled stretch | Record setting |
| Cling | Standard carton holding | Stronger tail hold | Check film tail |
| Puncture | Basic corner contact | Critical at sharp edges | Inspect after movement |
| Roll edge | Needed for stable run | Critical under high tension | Check split and telescoping |
Benefits
- Stable unwind reduces stoppage caused by edge tear, telescoping or uneven tension.
- Machine-compatible elongation supports pallet containment while controlling film use per pallet.
- Consistent cling helps keep cartons tight during warehouse handling and truck vibration.
- Clear roll weight and core specification help match the film to wrapper carriage limits.
- Batch color, roll flatness and winding direction can be checked before repeat export orders.
- Actual machine trials reduce the risk of selecting a film that only works at slow speed.
How Should Machine Stretch Film Be Matched to Wrapper Tension and Pre-Stretch Settings?
Machine film should not be selected by micron value alone. Two films with the same thickness can behave differently when rollers stretch the web at production speed. High tension may narrow the film, split the edge or tear pallet corners. Low tension may reduce holding force during transport. Test at normal speed and record the machine setting with the film specification.
TDS / Technical Range
| Item | Typical Range / Customizable Value |
|---|---|
| Material | Cast LLDPE stretch film for automatic and semi-automatic wrappers |
| Common width | 500mm standard; custom slit width by carriage requirement |
| Thickness | Typical 12-35 um, selected by load weight, edge condition and pre-stretch setting |
| Roll weight | Customized by net weight, gross weight and wrapper loading limit |
| Core size | 76mm / 3 inch paper core commonly used; core strength matched to roll weight |
| Pre-stretch reference | Approx. 150%-300%, depending on film grade, wrapper type and test condition |
| Color | Clear, black, blue or tinted options; batch color consistency can be checked |
| Cling | One-side or two-side cling depending on wrapping pattern and load contact |
| Quality checks | Width, thickness, edge quality, roll flatness, puncture, elongation and break observation |
| Storage | Clean dry storage, recommended 15-30 C, away from sunlight and high heat |
Applications
- High-frequency warehouse pallet wrapping for cartons, trays and mixed SKU distribution.
- Export pallets that need stable containment during loading, stacking and transport vibration.
- Food and beverage outer packaging where clear film and barcode visibility are required.
- Building materials, hardware and industrial goods where edge puncture must be tested.
- Third-party logistics centers using semi-automatic or automatic wrapping stations.
- Factory dispatch areas needing repeatable roll quality across several wrapping shifts.
Customization Options
Customization can include roll width, thickness, net roll weight, gross roll weight, core size, color, cling side, winding direction, carton packing and pallet loading pattern. For high-speed users, the best confirmation is a production-matched sample with the same wrapper model and similar pallet height.
If the film will run on several wrapper models, each machine should be checked. Roller pressure, brake control, carriage wear and film path can change the result even when the roll label is identical. Specification records, retained sample comparison and carton labeling for batch traceability help reduce repeat-order disputes.
What Should Be Checked Before Approving Stretch Film For Automatic Wrappers?
Before approval, confirm more than the roll label. Measure width, check core fit, inspect the roll edge, and run several full pallets without slowing the wrapper. Review top-layer stability, bottom wrap grip, film tail attachment and clean cutting. Storage should also be checked because heat, dust and long storage time can affect blocking and unwind.
FAQ
1. How do we choose between standard machine film and power pre-stretch film?
Use standard machine film for regular pallets and moderate tension. Choose power pre-stretch film when the line runs faster, the wrapper uses powered rollers or film consumption per pallet must be controlled. Final approval should be made on the actual wrapper.
2. Which specifications should be confirmed before bulk supply?
Confirm width, thickness, net roll weight, gross roll weight, core size, roll direction, color, cling side, carton quantity and pallet packing. Also record approved pre-stretch setting, wrap count and load type.
3. Why does film break on one wrapper but not another?
Wrapper speed, roller pressure, brake tension, carriage condition, film path and sharp pallet corners all change film behavior. Main wrapper models should be tested separately before repeat orders.
4. How should machine stretch film rolls be stored?
Store rolls in a clean, dry area away from direct sunlight, high heat and heavy compression. Protect roll edges and follow the agreed pallet pattern to maintain stable unwind.