The length of time an insulated bag will keep you warm depends on a number of factors, including the material of the bag, its size, the thickness of the insulation, the temperature of the item being insulated, and so on. Generally speaking, high-quality insulated bags can keep warm for hours to tens of hours.

The insulation time of the insulation bag is also affected by the use of the environment. If the temperature of the insulated items in the insulation bag, the higher the temperature, then the shorter the insulation time; if the lower the ambient temperature, then the longer the insulation time. In addition, the degree of air flow inside the insulation bag will also affect the insulation effect.

So, to answer the question of how long the bag can keep warm, you need to specifically consider the quality of the bag, the size of the bag, the temperature of the insulated items, the use of the environment and many other factors.

Nonwoven insulation bag manufacturers:

1. Zhejiang Jiarong Packaging

Zhejiang Jiarong Packaging Co., Ltd. is a collection of development, production, sales in one manufacturer, the main business scope: a variety of environmental protection packaging, advertising and promotional gifts, nonwoven products. The main products include: non-woven shopping bags, non-woven handbags, environmental protection shopping bags, folding non-woven bags, PP non-woven bags, non-woven bags, non-woven bags of peritoneal film, supermarket shopping bags, non-woven bags for advertising and so on. The integrity, strength and product quality of Zhejiang Jiarong Packaging Co., Ltd. are recognized by the industry.

2. Freudenberg

Freudenberg Performance Materials is the world's leading supplier of innovative solutions for a wide range of applications, such as automotive interiors, apparel, building materials, filtration, hygiene, healthcare, footwear components and specialty products. The company has more than 25 production sites in 14 countries. The company's apparel business, which includes woven and nonwoven technologies, reported sizable sales growth, largely due to the acquisition of the Hansel brand from Hansel Textil of Iserlohn, Germany.

3. Kimberly-Clark Corporation

Kimberly-Clark -- which has one of the most complete and robust lists of nonwovens products -- produces hundreds of thousands of metric tons of nonwovens at mills around the world. While about 85 percent of that production is consumed internally, K-C continues to sell nonwovens and work with customers in a variety of market segments, including filtration, construction, acoustics and conveyor systems (wipes).

4. DuPont

DuPont is a world leader in agriculture, materials science, technology and innovation-driven specialty products. DuPont has strong leadership positions in nonwovens, construction, medical packaging and graphics, and continues to expand into new areas such as air cargo and lighting applications.

5. Ahlstrom

Ahlstrom is a high-performance fiber materials company that partners with leading companies around the world. ahlstrom has reorganized itself into two business areas - filtration and performance and specialty. The Filtration & Performance business includes engine and industrial filtration, industrial nonwovens, wall coverings, construction and wind energy businesses. The Specialty business area includes food packaging, masking tapes, medical and advanced filtration businesses.