Cast Stretch Film Machine is an industrial equipment that uses high-temperature molten polymer materials, extruded through a flat die head, directly cast into film, and then passes through a cooling roller, tension control system and winding device to produce multi-layer composite structure film materials. The overall appearance includes: twin-screw extruder main unit, wide-width die head, multi-zone temperature-controlled cooling roller group, online detection and trimming unit, fully automatic center winding module, digital control system, and optional online taping, slitting, embossing and other functional modules.

Optimized screw structure: efficient plasticization, strong production capacity

Cast Stretch Film Machine adopts Ф150mm + Ф90mm twin-screw structure. The screw geometry is specially designed according to the rheological characteristics of polyolefin films, which enhances the shearing and mixing ability of materials, plasticizes evenly, and improves the unit output stability by 15%. It is suitable for a variety of low-weight and high-uniformity film materials.

Precision die head system: balanced flow channel, precise film thickness control

The flat die head has a width of up to 4200mm and a multi-cavity flow channel structure. Combined with the online automatic thickness detection system, the film thickness can be controlled to fluctuate within the range of ±1.5μm. It is particularly suitable for the continuous, high-speed, and high-flatness production of 10-60g/㎡ thin functional film structures.

Energy-saving cooling and film guiding system: reduce energy consumption and improve stability

The core cooling roller adopts a spiral flow channel water circulation cooling structure, and the surface temperature control is stable at ±1℃, which effectively ensures uniform cooling of the film material forming. The optimized film penetration path design increases the manual film penetration efficiency by 40% and effectively reduces the initial waste film.

Automatic winding control: center drive switching automation

Equipped with a Φ1000mm maximum diameter center winding system, equipped with an automatic material receiving and roll changing device, it can realize non-stop roll changing operation and increase the effective operation time of the entire line. The embedded auxiliary pull-out system reduces the operator's load and improves production safety and convenience.

Full-line intelligent integration: one-stop digital monitoring

Cast Stretch Film Machine supports MES production management system docking, and visualizes the operation status of the entire line, energy consumption data, fault records, and production scheduling information. Functional modules such as online defect detection, online thickness automatic adjustment, and black tape lamination support free expansion to achieve customized intelligent factory management.

Applied to the production of baby diaper bottom film

Cast Stretch Film Machine is used in the production of PE breathable film in Unicharm's Southeast Asian factory. Combined with online embossing and black tape laminating systems, the bottom film produced has good ductility, breathability and stable roll diameter control, meeting the requirements of high-speed finished product line operation.

Applied to the manufacture of female sanitary napkin bottom film

Cast Stretch Film Machine serves Sofy's designated material supplier. Its composite film is characterized by lightness, high stretchability, and puncture resistance. The multi-layer structure controls the film body to feel soft and the molecular arrangement direction is stable, which meets the production needs of high-end daily sanitary materials.

Applied to the production of anti-seepage bottom film for pet pads

In cooperation with the OEM factory of the Simple Solution brand, Cast Stretch Film Machine is used to produce 20g/㎡ low-weight film materials in the manufacture of pet sanitary pad bottom films. By controlling the casting cooling process, the composite fastness and tear resistance of the film materials are effectively improved, and the overall use cost is reduced.

Applied to the preparation of the inner layer film of medical protective clothing

Cast Stretch Film Machine is deployed in the protective clothing material supply chain of Medline. The breathable film produced has excellent moisture permeability and blood barrier properties. Its high-strength molecular oriented structure makes the film material more suitable for medical contact environments.

Applied to the bottom membrane material of roof waterproofing

Serving TYPAR, a customer in the field of building materials, this model is used for the main material production of roof cushion breathable film. Through the online slitting and winding control system, the consistency of the film roll is improved, and the Cast Stretch Film Machine is supported for the automatic laying of the back-end.

Cleaning of screw and barrel: prevent carbon deposition and extend service life

It is recommended to perform online cleaning every 600 hours of operation, and use high-flow cleaning materials to discharge the residue. Disassemble and clean if necessary to prevent carbon deposition from affecting plasticization uniformity and film quality.

Die maintenance: prevent blockage and surface scaling

The die outlet needs to be cleaned at high temperature every week, and the residual glue is scraped off with a copper sheet tool. Hard objects are strictly prohibited from damaging the flow channel surface. The surface of the die should be kept dry to prevent condensed water from corroding the screws and seals.

Cooling system maintenance: maintain thermal efficiency and waterway cleanliness

The cooling roller needs to drain the waterway regularly and remove scale. It is recommended to test the cooling water inlet and outlet temperature difference and the water pump working pressure every month to ensure that the roller temperature control system operates within the design efficiency.

Reeling system maintenance: ensure accurate pressure and synchronous control

Check whether the reeling arm tension sensor and motor feedback system are out of adjustment every quarter, clean the auxiliary shaft pulling pneumatic system, and replace the aging seal ring in time to avoid air leakage affecting the roll changing efficiency.

Maintenance of the electric control system: Maintain stable control logic

PLC and HMI systems are recommended to perform system software upgrades and backups every 6 months to prevent program loss or communication anomalies. All wiring terminals should be tightened regularly to prevent vibration and loosening from causing signal errors.