Engineered for structural stability, optical clarity, and low-temperature sealing profiles. Select a customized solution for your machinery requirements.
Standard polyolefin shrink films are famous for their high mechanical strength and rapid contraction profiles. However, standard shrink force values (which typically exceed 250 cN to 350 cN/40mm) generate high compression that can easily bend, warp, or distort flexible, thin, or delicate items.
This is where Low Shrink Force (LSF) Polyolefin (POF) film provides a paradigm shift. Synthesized through advanced co-extrusion technology, LSF film displays a gentler shrink mechanism. It maintains high dimensional shrinkage rates of up to 60-70% when subjected to thermal energy, but limits its internal relaxation tension (often keeping it under 100-140 cN/40mm).
By optimizing the polymer matrix with specific plastomer modifiers and adjusting the orientation ratios during the blowing phase, we formulate a film that wraps tightly around sensitive products—like softcover books, promotional mailers, egg pulp trays, and flexible hardware profiles—without causing structural buckling. As a result, global procurement managers obtain crisp, retail-ready presentations that protect the physical shape of their products.
Our film exhibits controlled recovery stresses that prevent edge-bending and page warping. The polymer's cross-linking is calibrated to relax at lower temperatures, decreasing the force transferred to the product core.
By lowering the activation energy threshold, LSF films shrink evenly at lower tunnel temperatures. This reduces energy consumption by up to 25% and protects heat-sensitive packages.
A direct, engineering-grade matrix contrasting standard POF film with premium Low Shrink Force POF formulations under industrial production environments.
| Material Parameter | Standard POF Film | Low Shrink Force POF Film | Testing Standard |
|---|---|---|---|
| Transverse Shrink Force | 280 - 350 cN / 40mm | 80 - 130 cN / 40mm | ASTM D2732 / ISO 11501 |
| Longitudinal Shrink Force | 300 - 380 cN / 40mm | 90 - 140 cN / 40mm | ASTM D2732 / ISO 11501 |
| Free Shrinkage (120°C, 5s) | 60% - 75% | 55% - 68% | ASTM D2732 |
| Optical Haze | 1.8% - 2.5% | 1.0% - 1.5% | ASTM D1003 |
| Sealing Temperature Range | 140°C - 180°C | 115°C - 150°C | Internal Lab Standard |
| Coefficient of Friction (COF) | 0.20 - 0.30 | 0.15 - 0.25 | ASTM D1894 |
Note: Technical testing is conducted under standard laboratory conditions (23°C, 50% Relative Humidity). Specialized gauges (12μm, 15μm, 19μm, and 25μm) can be configured to adjust the mechanical properties based on the layout of your packaging machinery.
Deploying Low Shrink Force formulations to solve production-line challenges across multiple manufacturing sectors globally.
Paperback books, notebooks, and promotional catalogs packaged in high-tension shrink wraps often warp or bend at the corners, ruining their shelf appeal. LSF film provides clean, snug protection without exerting the compressive force that distorts paper covers.
Delicate items like fresh eggs packaged in recycled pulp trays are highly sensitive to external mechanical load. Utilizing breathable perforated LSF wrap allows moisture dissipation while containing the items safely without crushing the structural packaging trays.
Flexible rubber profiles, plastic clips, interior trim panels, and delicate wire assemblies must be protected from external dust and moisture during transport. LSF film creates a secure barrier without exerting enough force to warp the plastic moldings.
Choosing the right packaging material manufacturer is crucial. Importing specialized LSF films from our state-of-the-art facility in Zhongshan, China, provides distinct strategic advantages.
1. Advanced Raw Material Integration: Our factory coordinates directly with major global resin suppliers, including Dow and ExxonMobil. This provides us direct access to high-grade octene/hexene linear low-density polyethylenes (LLDPE) and polypropylene (PP) copolymers, ensuring consistent, high-quality material structures.
2. 5-Layer Co-extrusion Blown Film Lines: We utilize modern multi-layer co-extrusion technology to control the individual layers of LSF film. This allows us to adjust sealability, slip additives, and tensile strength independently to optimize production line performance.
3. Advanced Testing & Quality Control: Each production run is verified using ASTM-compliant laboratory testing. We monitor film density, haze, friction, and free shrink tension to ensure consistent batch-to-batch performance.
4. Industrial Location & Logistics: Located in the Pearl River Delta, our facilities provide streamlined logistics. With direct access to nearby shipping hubs in Shenzhen, Guangzhou, and Hong Kong, we help clients optimize transit timelines and freight costs.
Zhongshan Tianchen New Materials Co., Ltd. is a comprehensive, one-stop packaging material procurement platform established on the foundation of over 20 years of experience in the film packaging industry. We integrate resources and address customer needs to provide optimal packaging solutions for diverse industry requirements.
In a competitive global marketplace, Zhongshan Tianchen New Materials Co., Ltd. stands out as a reliable manufacturing partner. Whether you require low temperature heat shrink films, breathable perforated food films, or specialized low shrink force formulations, our team is equipped to support your technical needs.
At Tianchen, we maintain dedicated production, research and development, and sales teams to manage product quality at every stage. Our modern quality control system ensures all finished films meet our customers' exact specifications. This commitment to quality, combined with large-scale production capacities, has earned the trust of global buyers. Our experienced professionals continuously innovate to improve product performance, ensuring we deliver reliable solutions to our clients.
Combining decades of industry expertise with a focus on product performance, we simplify procurement for our clients. By offering a comprehensive range of packaging options—including POF, PVC, PE, CPP, and OPP shrink films—we provide tailored packaging solutions that match our clients' operational requirements and production line setups.
Answering common questions from B2B buyers and packaging engineers regarding material performance and compatibility.
Standard POF films store significant elastic strain energy during biaxial orientation. When heated in a shrink tunnel, this energy is rapidly released as shrink tension, which can pull and bend flexible paperboard, soft plastics, or thin profiles. Low Shrink Force (LSF) film is formulated with specific elastomeric polymers that limit contraction stress to under 130 cN/40mm, providing a snug wrap without deforming the product.
No, our LSF POF film is designed to run on standard L-bar sealers, side sealers, and continuous high-speed flow-wrapping machines. Because it seals at lower temperatures (typically 115°C to 150°C), you can lower your heat tunnel temperature settings, which helps reduce energy consumption and machinery wear.
We manufacture LSF film in thicknesses of 12, 15, 19, and 25 microns. A 12-micron film is ideal for lightweight paperbacks and promotional mailers. For general consumer goods and multi-packs, 15-micron film is standard. The 19-micron and 25-micron films are recommended for heavier or sharp-edged products that require higher puncture resistance.
Yes. All of our polyolefin (POF) heat shrink formulations are produced using FDA-approved raw materials and are compliant with REACH and RoHS standards, making them suitable for direct food contact applications.
Because LSF films activate at lower temperatures, they should be stored in a cool warehouse below 30°C (86°F), away from direct sunlight and heat sources. Storing the rolls horizontally in their original packaging helps prevent flat spots and preserves the film's structural integrity.
We provide a comprehensive range of packaging options, including heavy-duty PE wraps, high-gloss OPP films, and custom labeling solutions.
Tianchen Materials
