Comprehensive Analysis of the Applications and Advantages of Low-Melting-Point Feeding Bags and Disposable Feeding Bags

 

As an important packaging tool in the modern industrial field, feeding bags are specially designed for the sealed transportation of materials such as powders and liquids, and are widely used in industries such as chemical engineering, rubber manufacturing, and pharmaceutical production. Their core value lies in ensuring material safety, improving feeding efficiency, and reducing environmental pollution. This article will systematically analyze the characteristics and applicable scenarios of mainstream feeding bags from dimensions such as material characteristics, technical parameters, and application scenarios.

 

I. Low-Melting-Point Feeding Bags: Ideal Choices for the Rubber and Chemical Industries

Low-melting-point feeding bags are made of special composite materials, with the main components being EVA (ethylene-vinyl acetate copolymer) and auxiliary additives. They have features such as low melting point (70°C - 95°C), strong flexibility, and excellent tensile properties. In the rubber mixing process, this product can be co-melted with rubber raw materials and directly put into the internal mixer without unpacking, significantly simplifying the production process.

 

Core Advantages:

1. Safety and Environmental Friendliness: Sealed packaging reduces dust flying and liquid leakage, lowering the environmental pollution in the workplace and the health risks to personnel.

2. Accurate Measurement: The materials pre-packed in the bags can be managed through standardized weight, avoiding manual weighing errors and improving the accuracy of ingredient batching.

3. Process Compatibility: They are fully compatible with chemical additives such as carbon black, white carbon black, and oil agents, without producing impurities or "white pollutants", ensuring the quality of rubber products.

4. Degradability: They support incineration or natural degradation treatment, meeting the requirements of environmental protection regulations.

 

Technical Parameters:

- Physical properties: Longitudinal (MD) breaking strength ≥ 20MPa, transverse (TD) ≥ 19MPa; longitudinal elongation ≥ 300%, transverse ≥ 500%.

- Size range: Width 200 - 800mm, length 300 - 1200mm, thickness 0.04 - 0.08mm, and customized production is supported.

 

II. Disposable Feeding Bags: Solutions for Pharmaceutical and High-Cleanliness Scenarios

For industries with high hygiene standards such as pharmaceuticals and food, disposable feeding bags are made of PE film and treated by γ-ray irradiation sterilization (25 - 40kGy) to ensure a sterile state. Their double-layer sealed packaging or vacuum packaging design can effectively avoid cross - contamination and material residues, and is suitable for the weighing, transfer, and feeding links of solid/liquid materials.

 

Core Advantages:

1. Sterilization Guarantee: The irradiation process inactivates microorganisms, meeting strict regulatory requirements such as GMP.

2. Anti - Residue Design: The special inner layer coating reduces powder adhesion, and more than 95% of the residual materials can be recovered with the flushing function.

3. Ergonomic Optimization: The bag body support rods and the size of the feeding port (2" - 8") are adapted to a variety of equipment, improving the convenience of operation.

 

Application Scenarios:

- Sub - packaging of pharmaceutical raw materials and excipients

- Transfer of precision chemical reagents

- Feeding of food additives

 

III. Extended Applications of Other Functional Feeding Bags

In addition to the above mainstream types, several special - purpose feeding bags have been developed in the industrial field:

1. Square - Bottom Structured Bags: Using the eight - side sealing process, they have strong standing stability and are suitable for shelf display and bulk material storage.

2. Hot - Melt Industrial Bags: Made of simple composite materials, they can be directly put into the mixing equipment with materials for melting, avoiding the unpacking process, and are commonly used for the packaging of asphalt and road marking raw materials.

3. Large - Capacity Powder Bags: They offer volume options from 3L to 50L, suitable for production lines of different scales, combining flexibility and economy.

 

IV. How to Choose the Suitable Feeding Bag?

When choosing a feeding bag, the following factors need to be comprehensively considered:

1. Material Characteristics: Powder fluidity, liquid viscosity, chemical corrosiveness, etc.

2. Process Conditions: Whether high - temperature melting, sterilization treatment, or reuse is required.

3. Environmental Protection Requirements: Priority should be given to degradable materials to reduce solid waste pollution.

4. Cost - Benefit: Balance the customized requirements and procurement costs according to the production scale.

 

Through scientific selection, feeding bags can significantly improve the automation level and safety of industrial production and become a key facilitator for process optimization and green manufacturing.