The PP T-shirt bag blown film machine is specialized equipment used to produce polypropylene (PP) T-shirt-style carrier bags. Through processes such as extrusion, inflation, and traction, it forms tubular film which is later converted into carry bags. Its core function is the efficient production of lightweight, high-strength PP film to meet various application needs. Below is a sector-specific analysis of its applications:

1. Retail and Supermarket Industry

Project Background:
Supermarkets and convenience stores require large volumes of low-cost, durable T-shirt bags for customer use. These bags must meet various load-bearing demands (e.g., 3kg to 10kg).

Solution:
Using single-layer or multi-layer co-extrusion technology with adjustable die head structures (e.g., spiral die heads) and cooling air rings, the machine produces uniform-thickness (15–30μm), tear-resistant PP films.

Application Case:
A retail chain utilizes this machine to produce custom-logo T-shirt bags, achieving daily outputs of over 500,000 units with an 8kg load capacity—sufficient for peak-hour customer traffic.

Machine Advantages:
High production efficiency (line speed up to 120m/min), material utilization rate up to 98%; supports color masterbatch for custom colors and offers excellent printability.

Future Outlook:
Integration of intelligent metering systems to dynamically adjust production based on real-time orders; adaptation to degradable PP materials (e.g., PP + starch blends) to comply with plastic restriction policies.

2. Food Packaging Industry

Project Background:
Fresh and cooked food packaging requires hygienic, leak-proof bags that can also display food safety markings.

Solution:
Equipped with food-grade screws and filtration systems, the machine uses FDA-compliant PP resins to produce high-transparency (>90%) clean films.

Application Case:
A food manufacturer uses the machine to produce antimicrobial PP T-shirt bags with nano-silver additives for cooked food packaging, extending shelf life by 20%.

Machine Advantages:
Supports functional modifications (e.g., anti-fog, high oxygen barrier) for modified atmosphere packaging; thickness tolerance control within ±1.5μm ensures strong sealing.

Future Outlook:
Development of intelligent thermal-sensitive films that indicate freshness through color change; integration of direct QR code film printing for traceability.

3. Logistics and E-commerce Industry

Project Background:
E-commerce logistics require lightweight, puncture-resistant packaging bags to reduce shipping damage and lower costs.

Solution:
Using three-layer co-extrusion technology with reinforced middle layers (e.g., CaCO₃ fillers), the machine produces PP films 20–50μm thick with tensile strength ≥35MPa.

Application Case:
A logistics company utilizes this machine to produce heavy-duty PP bags for books and clothing (load capacity: 15kg), reducing damage rates to just 0.3%.

Machine Advantages:
Capable of producing wide-width films (folded width up to 1.2m), suitable for large item packaging; supports in-line punching for easy hanging and display.

Future Outlook:
Integration with RFID-enabled film blowing for full-package tracking; development of reusable PP bags compatible with shared logistics systems.

4. Environmental and Biodegradable Materials Sector

Project Background:
Environmental regulations are driving demand for degradable T-shirt bags, requiring solutions for the traditional PP degradation challenge while maintaining cost efficiency.

Solution:
Modification of temperature control systems to accommodate PLA/PP blends or oxo-biodegradable PP materials, ensuring stable processing at 170–190°C.

Application Case:
An environmental company produces photodegradable PP T-shirt bags with >90% fragmentation within 180 days outdoors, used for community waste sorting.

Machine Advantages:
Screw material upgraded to bimetal alloy for 3x corrosion resistance; features in-line viscosity monitoring to prevent thermo-oxidation of degradable materials.

Future Outlook:
Development of fully bio-based PP (e.g., derived from sugarcane bagasse); creation of an integrated “film blowing + composting” solution for closed-loop sustainability.

5. Industrial and Agricultural Sector

Project Background:
Industrial parts and agricultural products require low-cost, recyclable PP bags for dust protection and temporary storage.

Solution:
Utilizes high melt-flow index PP to produce heavy-duty bags (thickness: 50–100μm) with optional anti-static surface coatings.

Application Case:
A farm equipment factory uses PP T-shirt bags to pack bolts and small parts with anti-rust warning labels, ensuring corrosion-free storage for up to 6 months outdoors.

Machine Advantages:
Supports wide temperature range processing (usable in -10°C to 50°C environments); low energy consumption (<300 kWh per ton), offering significant cost savings.

Future Outlook:
Development of weather-resistant PP films (UV-resistant, anti-brittle); integration with automated bagging systems to enable unmanned industrial packaging lines.