Is polyester fabric a good material? Yes, in the backpack industry, polyester is a very common fabric. Over 90% of student backpacks are made from polyester, and it has the following advantages: High tensile strength: The breaking strength of polyester is about 4.4–9.6 cN/dtex, which is higher than that of cotton. Durability: Polyester can withstand thousands of rubs without damage. Low moisture absorption: The moisture absorption rate of polyester is 0.4-0.8%, which means it has strong moisture resistance and dries quickly. High colorfastness: Dyed polyester can achieve a level of 4-6 under the ISO 105-B02 standard, and it is not easy to fade even with long-term outdoor use. Good chemical resistance: Polyester has good resistance to common acids, alkalis, and oily cleaning agents.   Is 100% polyester better than cotton? It depends on the specific use. Polyester is superior to cotton in terms of durability, water resistance, and colorfastness. However, cotton is biodegradable, softer, more breathable, and more skin-friendly.Polyester is more suitable for making bags than cotton.   What are the negatives of polyester? It cannot degrade in natural conditions, which can cause long-term environmental pollution and does not meet the environmental requirements of some enterprises. It is prone to static electricity, especially in dry environments. It cannot withstand high temperatures. The melting point of polyester is around 250 degrees Celsius, and it will deform under high temperatures. It should not be used near fire sources or in high-temperature environments. Is polyester fabric good for bags? Undoubtedly, the characteristics of polyester (high colorfastness, water resistance, durability, and low cost) make polyester bags a very suitable choice.   Is a 100% polyester bag waterproof? A 100% polyester bag is actually only water-resistant, meaning it can repel water from daily rain, but it is not completely waterproof. The water resistance of a backpack depends not only on the material but also on the design and structure. Typically, the water resistance rating of a 100% polyester bag is IPX4, which is considered water-resistant but does not meet the waterproof requirement (remaining dry for 30 minutes at a water depth of 1 meter).   Does a polyester bag last long? Polyester bags are usually very durable. Polyester itself is known for its strong durability. As long as the structural design is reasonable, a polyester bag can typically last 3-5 years in normal conditions.   Which is better for bags, nylon or polyester? When it comes to polyester bag vs nylon bag, both materials have their own strengths.The advantages of polyester have been discussed earlier. In terms of water resistance and UV resistance, polyester has the upper hand. However, nylon is lighter, more durable, and stronger, making it more suitable for outdoor backpacks and other outdoor products. Additionally, nylon is more expensive than polyester.  

Generally, a waterproof backpack should have better water resistance than a water-resistant backpack.   A waterproof backpack can withstand temporary submersion without leaking, while a water-resistant backpack only resists splashes or light rain. A waterproof backpack should meet at least IPX7 water resistance, while a water-resistant backpack only needs to meet IPX4.   IP Rating Explanation The IP rating is an internationally recognized standard for water resistance, set by the International Electrotechnical Commission (IEC). The higher the IP rating, the better the water resistance. There is no strict standard in the backpack industry specifying what IP rating a product must have to be called "waterproof," so the difference between waterproof backpack and water-resistant backpack comes from a common understanding of these terms. IPX7 vs IPX4 Testing Process IPX7: The backpack’s zippers are closed, and it is submerged in water up to a depth of one meter (measured from the top of the backpack) for 30 minutes. Afterward, the backpack is taken out, and the interior should remain dry. IPX4: The backpack is closed and sprayed with water in all directions (front, back, left, right, up, down) for 5 minutes in each direction, with a water flow rate of 10 liters per minute. After the test, the interior should remain dry.   It is clear that a IPX4 rated water-resistant backpack is sufficient for everyday situations, such as encountering rainy or damp weather. On the other hand, a IPX7 rated waterproof backpack is more suited for professionals who work in extreme conditions.

Artificial leather, also known as synthetic leather or faux leather, is a man-made material that mimics the texture of animal leather without containing any animal components. Due to its excellent water resistance and durability, it is widely used in the handbag industry. Common materials used in artificial leather include PU, PVC, polyester, polyurethane, and certain natural fibers derived from plants. PU Leather PU leather is manufactured using two methods: dry processing and wet processing. Although the processes differ, both involve coating a base fabric with polyurethane.   PVC Leather PVC leather is produced by applying a layer of polyvinyl chloride onto a fabric backing. Compared to PU leather, PVC leather is more robust but offers less breathability.   Microfiber Polyester Leather This material combines ultra-fine polyester fibers with polyurethane, resulting in a soft yet durable product. However, it tends to be more expensive. Plant-Based Leather Transforming plant waste into leather is a relatively new technology developed in recent years. This method repurposes plant waste to create environmentally friendly leather alternatives. Common plant-based materials include apple waste, mushroom mycelium, cork leather, and pineapple fibers. These materials are characterized by their natural degradability and higher production costs.

Finding a reliable and cost-effective bag manufacturer can be a real challenge. With so many options available, how do you ensure that you’re choosing the right supplier who delivers on quality, cost, and reliability? Whether you're launching a new bag design or expanding your product line, this guide will help you make an informed decision.   1. Clarify Your Requirements      Understanding your own needs can quickly narrow down the search range, avoiding the frustration of searching aimlessly. These needs include: whether design services are required, the quantity of orders, the type and material requirements of the bags, as well as any specific requirements for logistics and production locations. 2. Search for Manufacturers Online   Determine appropriate keywords, such as "cambodia bag factory","vietnam bags manufacturer","backpack manufacturers in india" and then search on the following platforms:      B2B Platforms: Common B2B platforms include Alibaba and Made-in-China. These platforms host numerous bag manufacturers and provide customer ratings that can help you assess their reliability.      Google Search: Many bag manufacturers have their own websites that offer detailed information. The “Contact Us” page is particularly useful for gathering more information about the company.      Social Media Platforms: Platforms like LinkedIn and Facebook are also valuable. Many B2B bag suppliers have company pages on these social media sites where they post updates and information.      Trade Shows: Attending trade shows allows you to meet bag suppliers face-to-face and directly discuss your needs. 3. Evaluate the Bag Manufacturer   Once you have a list of potential suppliers, you can assess their reliability from the following aspects:      Certificates: Certificates such as WRAP, BSCI, SCAN, and ICAS are important indicators of a bag factory’s compliance and quality.      Production and Design Capabilities: Ensure that the manufacturer can meet your design and production requirements.      Communication and Responsiveness: Reliable suppliers usually respond promptly to inquiries, especially on weekdays.     Quality Control Process: Ensuring product quality is crucial when selecting a bag manufacturer. Check whether the factory has an independent quality control team or conducts in-house testing. For example, at Synberry, our backpack  factory is equipped with a dedicated laboratory that performs comprehensive product testing, ensuring that every bag meets high-quality standards before shipment. This level of in-house quality control helps minimize defects and guarantees consistency across production batches.   Request Samples: Requesting samples can give you a direct sense of the supplier’s production quality. 4.Next StepsOnce you have shortlisted a few manufacturers, reach out to them for further discussions. Ask for quotes, review their sample quality, and negotiate terms to find the best fit for your business.If you’re looking for a reliable bag manufacturer with strong quality control and flexible production options, Synberry is here to help. Get in touch with us today to discuss your project!