How You Can Tell Different Materials of Insulated Cooler Bags

If you work with cooler bags, insulation bags or portable fridge bags for wholesale, retail or customized orders, you will find it really important to learn how to tell the different raw materials. Many buyers feel confused when picking items, because different materials bring totally different insulation effect, durability, hand feel and using experience.

Today we share practical, easy ways to check bag materials, from checking labels, touching surface, simple visual observation to basic burning test. Except material guide, we also add our factory cooperation info for your B2B business, so you can know more about our good quality, satisfied service, competitive price and timely delivery when you plan to place orders with us.

First of all, the easiest and most reliable way is to check product labels and attached instructions. Most formal cooler bag products will stick detailed labels on the inside or outside. These marks will clearly write down what materials they use, such as 100% polyester fiber, nylon, cotton, neoprene, and the recycled materials with RPET, recycled bamboo firer, recycled cotton and so on. This method save you lots of time, and the information is always accurate. We suggest you check labels first every time, no matter you check finished goods in market or samples from suppliers.

Next, we can judge materials just by looking appearance and touching with hands. This is the most common method people use in daily work, and you can get basic judgment after you get familiar with different fabrics. Let us talk about each material one by one:

1. For natural cotton material, you can see obvious natural fiber texture on the surface. It do not look super smooth like man-made synthetic fabric, and the color tone is soft and natural, you will hardly see too bright or strange color on cotton cooler bags. Look very close, you can find tiny gaps and fiber joints where threads weave together. When you touch it, the fabric feel thick and soft, it is breathable and friendly to skin. Your hands will not feel cold or stuffy when holding this kind of bags.

2. Then is bamboo fiber material. Its surface texture is more delicate, color is fresh and elegant. Some products keep the original natural color of bamboo material. The surface is smooth, but compare with pure plastic material, its surface gloss is lower. When touching, it is soft, smooth and lightweight. It brings a little cool feeling on hands, and always keeps dry, no sticky or rough feeling at all.

3. Polyester material, like oxford fabric, comes in various deniers like 300D, 600D,420D and 1680D, usually coated with PU or PVC for waterproof and anti-stain performance. It is tough, tear-resistant, wrinkle-proof, quick-drying and colorfast, easy to clean and suitable for cooler bags. Dragon dance fabric is a cationic polyester Oxford material created for traditional dance costumes and festival decorations. It features bright saturated colors, soft flexible texture and good print ability, lightweight for free movement and resistant to fading and tearing, ideal for costumes, flags and event ornaments.

4. We also have recycled materials, such as recycled polyester fiber, which is eco-friendly and popular in recent years. Its appearance is close to original polyester, smooth surface and rich color choices. But because the raw material sources are complex, sometimes you can find uneven color or tiny impurity particles if you look hard enough. Hand feel is almost same as normal polyester, smooth, stiff and strong. It has good elasticity when you pull gently, not easy to break, and it is also non-breathable.

The third testing way is simple combustion experiment. We need to remind everyone again, this test have safety risk, please do not try it in crowded place or near flammable goods. Better to operate in open area, and professional workers should do this test. We only use small fabric scraps for burning check.

Natural cotton burn with smell like burning paper, flame burn steadily at medium speed. After burning out, the ash is off-white, you can twist it into fine powder easily with fingers, no hard lumps left behind.

Bamboo fiber gives out smell like burning grass and wood while burning, flame is yellow with a small amount of black smoke. The residual ash quantity is small, color is off-white and loose, it also turn into powder after rubbing.Recycled polyester fiber burn fast with bright flame, and send out sharp pungent plastic smell. The leftover is hard black lump, cannot be crushed into powder, this feature is same as regular polyester.

The last two reference points are product price and brand background. Raw material cost directly decide selling price. Natural cotton have moderate price level, raw material cost and processing craft are common. Bamboo fiber price float up and down due to raw material collection and processing steps, generally stay in reasonable range. Recycled materials price depends on recycled material quality and processing difficulty, some low-grade recycled products will be cheaper. Famous brands always mark material details clearly on product introduction, and they have fixed material selection rules and strict quality standards. Many eco-friendly brands prefer natural fiber or degradable plastic, so you can combine brand positioning to help judge materials too.

When you select cooler bag suppliers, material quality is just one part, factory strength, service and qualification are also very important. Our factory supply all kinds of insulation bags, cooler bags and outdoor storage bags, we have complete supporting facilities and mature production system. Below is our core business information for global B2B partners: All the fabric we use for cooler bags have passed strict incoming inspection before sending to production line. No unqualified raw material will be used in mass production. From material cutting, sewing, printing to final packing, every work step is supervised by QC staff. No matter you choose common polyester, eco-friendly recycled fabric, natural cotton linen or degradable plastic, we can arrange production as your request.

Many overseas clients choose to cooperate with us for long time, not only because we can provide various material options for cooler bags, but also our stable quality and thoughtful after-sales service. If you are looking for reliable cooler bag manufacturer, you can send us your demand, we will make free samples for you to check material, hand feel and overall quality first. We believe professional production strength and sincere service can create win-win cooperation for both sides.