Sewn Open Mouth Bags, also referred to as SOM bags, are commonly used across multiple industries, from agriculture to construction, due to their durability and cost-effectiveness. However, one significant quality issue that many producers and consumers encounter is the phenomenon of “bag blowouts” or ruptures, which severely impacts the integrity of the packaging. This issue is particularly problematic in heavy-duty applications where the bag is required to withstand substantial weights and external forces.
At VidePak, we understand that the most serious quality problem associated with woven bags, particularly Sewn Open Mouth Bags (SOM Bags), is the risk of bag explosions, commonly known as “炸包” in the industry. These failures, which can result from weak spots in the bag or improper handling, not only affect the performance of the packaging but can lead to costly product loss, environmental concerns, and significant damage to brand reputation. Through rigorous quality control and process optimization, we have developed robust systems to prevent this from happening.
This article discusses the causes of sewn open mouth bags bursting and outlines the steps VidePak takes—from raw material selection to final product inspection—to ensure that Sewn Open Mouth sacks maintain their strength, resilience, and safety.
Causes of Bag Ruptures
A blown bag can occur for several reasons, which can usually be traced back to issues in material quality, manufacturing processes, or improper handling. In the case of Open Mouth Bags, these failures may result from one or more of the following:
- Material Defects: The quality of polypropylene (PP) material used in woven bags plays a crucial role in their strength and durability. Substandard raw materials, whether they are recycled or not up to specification, can lead to weak spots in the fabric of the bags, making them prone to bursting under pressure.
- Manufacturing Issues: Poor weaving techniques, inconsistent tension on the looms, or inadequate sewing during the bag’s construction can lead to weak areas where pressure from heavy contents might cause the bag to rupture.
- Improper Storage or Handling: External factors like exposure to UV radiation or rough handling during transport or storage can degrade the bag’s strength, leading to a higher likelihood of failure. This is particularly problematic in outdoor storage or where the bags are exposed to harsh weather conditions.
- Inadequate Testing: If bags are not properly tested for stress and load-bearing capacity, they may be put into use without meeting the necessary standards to prevent failure.
Measures to Prevent Sewn Open Mouth Bags from Bursting
To prevent these issues, VidePak employs a comprehensive set of measures that address each potential cause of bag failure. These measures are implemented at every stage of the production process to ensure that our Sewn Open Mouth Bags exceed customer expectations for quality and performance.
1. Raw Material Control
The first step to preventing bag ruptures is ensuring the raw materials used in production are of the highest quality. At VidePak, we only use virgin polypropylene material sourced from reputable suppliers. By working with trusted providers, we ensure that the PP used in our bags is strong, durable, and free from contaminants or defects that could weaken the fabric.
Our commitment to quality starts with incoming material inspections. Every batch of polypropylene is tested for key attributes such as tensile strength, elongation, and UV resistance. This ensures that the raw material is suitable for the intended application, whether it’s for Block Bottom Bags for heavier loads or Bottom Open Mouth Bags designed for lighter applications.
2. Rigorous Manufacturing Processes
Manufacturing processes play a crucial role in ensuring the strength of Sewn Open Mouth sacks. At VidePak, we leverage state-of-the-art equipment from global suppliers like Starlinger, known for its cutting-edge technology in woven bag production. Our production line includes 150 circular looms, 16 extrusion lines, 32 lamination machines, and 16 printing machines, all designed to produce bags that meet the highest industry standards.
The weaving process itself is done under stringent control, with precise tension settings on the looms to ensure uniform fabric strength. Additionally, during the sewing process, we use high-quality threads and industrial-grade sewing machines to minimize the risk of weak seams, which are often a common failure point in Sewn Open Mouth Bags.
3. In-Depth Quality Control at Every Stage
Quality control is a cornerstone of VidePak’s manufacturing philosophy. Each batch of bags undergoes a comprehensive inspection process at every stage of production. We implement strict parameters for testing the physical properties of our bags, ensuring they are strong enough to handle their intended loads without breaking. These include:
- Thickness Measurement: We ensure the correct thickness is maintained throughout production to provide adequate strength without compromising flexibility.
- Tensile Testing: To evaluate the bag’s ability to withstand external stress, each bag undergoes tensile strength testing, measuring how much force the fabric can handle before rupturing.
- UV Resistance Testing: As UV degradation is a common issue, particularly for bags used outdoors, we test the material’s resistance to UV rays to ensure the bags will hold up under extended exposure to sunlight.
- Drop Testing: Bags are subjected to fall tests from different heights to simulate handling conditions and ensure they don’t burst upon impact.
- Visual Inspection: Finally, all bags are inspected for any visible defects, including stitching errors, material inconsistencies, or physical damage, ensuring that only flawless bags proceed to the next stage.
These testing processes are designed to prevent bags from reaching customers that might not be up to the required standards.
4. Comprehensive Testing of Finished Products
At VidePak, we understand that thorough testing doesn’t stop at production. Once the Open Mouth Bags are finished, they undergo additional rounds of rigorous inspections before being approved for shipment. This includes strength tests, functionality tests, and other industry-specific requirements. If any bags fail to meet the stringent quality checks, they are immediately discarded to prevent compromised products from reaching the market.
5. Customer Feedback and Continuous Improvement
We continuously monitor the performance of our bags through customer feedback and real-world testing. This enables us to identify potential areas for improvement and address them proactively. Our focus on continuous improvement ensures that the risk of bag blowouts or other failures remains minimized, reinforcing the reliability of Sewn Open Mouth Bags in all applications.
Conclusion
At VidePak, preventing Sewn Open Mouth sacks from blowing out is a top priority. By carefully selecting high-quality raw materials, employing advanced manufacturing processes, and conducting extensive quality control checks at every stage of production, we ensure that our Open Mouth Bags provide the strength, durability, and reliability needed in various industries. From agriculture to construction, our bags are designed to withstand demanding conditions and ensure that the integrity of your goods remains intact.
For further reading, you can explore our commitment to quality in Sewn Open Mouth Bags here, or check out how we’re shaping the future of packaging with Sewn Open Mouth sacks here. To understand more about the innovation behind Open Mouth Bags, you can visit this page.
By ensuring that every batch of Sewn Open Mouth Bags is subjected to thorough testing and adhering to strict manufacturing protocols, we eliminate the risk of bag failures, providing peace of mind for our customers and reliability for their packaging needs.