In daily life, packaging bags are everywhere. They not only facilitate our shopping and carrying of items, but also to some extent protect the integrity and freshness of the goods. However, have you ever thought that there are actually many different types of packaging bags, each with its unique functions and application scenarios? This article will take you to a deeper understanding of the classification of packaging bags and their applications in different fields.
1、 Classified by Material
Plastic packaging bag
Plastic packaging bags are one of the most common types of packaging bags in daily life. They have the advantages of lightweight, waterproof, high transparency, and low cost, and are widely used in various fields such as food, daily necessities, clothing, etc. Common plastic packaging bags include polyethylene (PE) bags, polypropylene (PP) bags, and polyvinyl chloride (PVC) bags. Among them, PE bags have a soft texture and are commonly used for packaging food and fresh products; PP bags have high heat resistance and transparency, making them suitable for packaging hot food and some foods that require microwave heating; Although PVC bags have high transparency, due to the presence of plasticizers, they are generally not used for food packaging and are more commonly used for packaging industrial products or non food daily necessities.
Paper packaging bag
Paper packaging bags are receiving increasing attention due to their environmental friendliness and recyclability. They are usually made of materials such as kraft paper and white cardboard, which have good printing performance and can print exquisite patterns and text. Therefore, they are often used to package gifts, cosmetics, clothing and other products. Paper packaging bags not only give people a natural and high-end feeling, but also reduce environmental pollution to a certain extent. In addition, some paper packaging bags can also meet different packaging needs through special processing techniques such as waterproof treatment, oil proof treatment, etc.
Non woven packaging bag
Non woven packaging bags are a new type of environmentally friendly packaging material. It has the characteristics of durability, reusability, and good breathability, and has gradually become a popular choice to replace traditional plastic bags in recent years. The material of non-woven bags is mainly polypropylene fiber, which is processed through special techniques. Its appearance is similar to fabric, with a soft touch that can print various patterns and logos. It is widely used in shopping bags, gift bags, promotional bags, and other fields. Using non-woven packaging bags can not only reduce white pollution, but also reflect the user's environmental awareness, making it a sustainable packaging choice.
aluminium foil bag
Aluminum foil packaging bag is a packaging material with high barrier properties. It is composed of aluminum foil and plastic film, which can effectively block the penetration of air, moisture, and light. Therefore, it is often used to package foods that require high preservation, such as tea, coffee, nuts, health products, etc. Aluminum foil packaging bags can not only extend the shelf life of food, but also maintain its taste and nutritional content. In addition, aluminum foil packaging bags also have good moisture and oxidation resistance, which can provide reliable protection for food. However, due to its relatively high cost, it is generally not used for packaging ordinary food.
2、 Classified by Function
Fresh packaging bag
The main function of fresh-keeping packaging bags is to extend the shelf life of food. They usually use special materials and structural designs that can effectively regulate the gas composition and humidity inside the packaging bag, thereby inhibiting the respiration of food and the growth of microorganisms. For example, some fresh-keeping packaging bags may add ethylene absorbents to reduce the release of ethylene gas from fruits and vegetables during storage, thereby slowing down their maturation and decay rate; Some fresh-keeping packaging bags also use materials with good breathability, allowing food to breathe moderately inside the packaging bag while preventing external air and moisture from entering, maintaining the freshness of the food. Fresh packaging bags are widely used in the packaging of fruits, vegetables, meat, seafood and other foods, and are an indispensable type of modern food packaging.
Vacuum packing bag
Vacuum packaging bag is a packaging method that creates a vacuum environment inside the packaging bag by removing the air inside the bag. This packaging method can effectively reduce the contact between food and air, prevent food oxidation, spoilage, and bacterial growth, thereby extending the shelf life of food. Vacuum packaging bags are usually made of multi-layer composite materials, which have good barrier properties and puncture resistance, can withstand certain pressure, and prevent the packaging bag from breaking during the vacuum pumping process. Vacuum packaging bags are widely used for packaging meat, fish, dried fruits, tea and other foods, as well as for packaging items that require long-term preservation, such as archives, documents, antiques, etc. Through vacuum packaging, these items can be stored in a relatively stable environment for a longer period of time, reducing the risk of moisture, mold, and damage.
Anti-static packing bag
Anti static packaging bags are mainly used to package electronic products and precision instruments that are sensitive to static electricity. During the production, transportation, and storage of electronic products, static electricity may cause damage to electronic components, leading to product malfunctions. Anti static packaging bags can effectively prevent the generation and accumulation of static electricity, protecting electronic products from interference and damage caused by static electricity. This type of packaging bag is usually made of special anti-static materials, such as anti-static polyethylene, anti-static polypropylene, etc. Its surface resistivity is low, which can quickly introduce static electricity into the ground, thereby avoiding the harm of static electricity to the product. Anti static packaging bags are widely used in the packaging of electronic products such as integrated circuits, semiconductor devices, electronic components, and liquid crystal displays, and are an essential type of electronic product packaging.
Hot sealed packaging bag
A heat sealed packaging bag is a type of packaging bag that melts and bonds the sealed parts of the bag together by heating. This packaging method has the advantages of easy operation, good sealing, and low cost, and is therefore widely used in the packaging of products such as food, medicine, and daily necessities. The material of heat sealed packaging bags is usually plastic film, such as polyethylene, polypropylene, polyester, etc., which have good heat sealing and mechanical properties. During the packaging process, the opening of the packaging bag is heated to an appropriate temperature using a heat sealing device, causing it to melt and bond together, thus achieving a sealed packaging. Hot sealed packaging bags can be designed in different shapes and sizes according to different packaging needs, such as pillow packaging bags, four sided sealed packaging bags, three sided sealed packaging bags, etc., to meet the packaging requirements of various products.
3、 Classified by purpose
Food packaging bag
Food packaging bags are the most widely used type of packaging bags. They need to meet the requirements of food hygiene and safety, ensuring the safety and freshness of food during the packaging process. The materials of food packaging bags are usually food grade plastics, aluminum foil, paper, etc., which have good barrier properties, freshness, and sealing properties. For example, packaging bags used for liquid food are usually made of multi-layer composite materials, which can effectively prevent liquid leakage and the entry of external air; The packaging bag used for packaging baked goods needs to have good breathability to maintain the soft texture of the food. In addition, food packaging bags also need to comply with relevant food safety regulations and standards, such as printing ink must be food grade and cannot contain substances harmful to the human body.
Daily necessities packaging bag
Daily necessities packaging bags are mainly used to package some daily necessities, such as cosmetics, detergents, hygiene products, etc. This type of packaging bag comes in a variety of materials, including plastic, paper, non-woven fabric, etc. Its design emphasizes both aesthetics and practicality. For example, cosmetic packaging bags are usually made of transparent or semi transparent plastic materials, which can clearly display the appearance and color of the product, and also print exquisite patterns and brand logos to attract consumers' attention; Washing product packaging bags need to have good sealing and compression resistance to prevent product leakage and deformation during transportation and storage.
Industrial packaging bags
Industrial packaging bags are mainly used to package some industrial products, such as chemical raw materials, building materials, mechanical components, etc. The materials of such packaging bags are usually plastic, paper, woven cloth, etc., which have high strength and durability, and can withstand large weight and pressure. For example, packaging bags used for packaging chemical raw materials are usually made of multi-layer composite materials, which have good waterproof, moisture-proof, and leak proof properties, ensuring the safety of chemical raw materials during transportation and storage; The packaging bags used for packaging building materials need to have high tensile strength and wear resistance to prevent them from breaking and being damaged during transportation.
Gift packaging bag
Gift packaging bag is a decorative and aesthetically pleasing packaging bag mainly used for packaging gifts. They are usually made of materials such as paper, non-woven fabric, silk, etc., with exquisite appearance and high-end texture. The design of gift packaging bags pays attention to details and personalization, and suitable colors, patterns, and styles can be selected according to different gifts and occasions. For example, packaging bags used for high-end gifts may be made of silk material and printed with exquisite embroidery patterns, giving people a luxurious feeling; The packaging bags used for children's gifts may use bright colors and cute cartoon patterns to attract children's attention. Gift packaging bags can not only protect gifts, but also increase their added value, elevate the grade and emotional value of gifts.
4、 Classify by shape
Flat pocket
Flat pockets are one of the most common shapes of packaging bags, characterized by parallel sides and a flat bottom. This type of packaging bag has a simple structure and low production cost, making it suitable for packaging items with regular shapes and small volumes, such as candies, cookies, small accessories, etc. Flat pockets can be designed in different sizes and thicknesses according to different packaging needs to meet different product packaging requirements. In addition, flat pockets can also be decorated with printing, hot stamping, embossing and other techniques to give them a certain degree of aesthetics.
Self standing bag
Self standing bag is a packaging bag with a supporting structure at the bottom, which can be placed upright on flat ground. This type of packaging bag has a unique appearance and good display effect, so it is often used to package products that need to be displayed on shelves, such as food, beverages, cosmetics, etc. The material of a self-supporting bag is usually plastic film, which is processed through special techniques to form a stable support surface at the bottom. Self standing bags not only facilitate consumers to view product information and appearance, but also save shelf space and improve product display effectiveness.
reticule
A handbag is a packaging bag with a handle, which is convenient for consumers to carry. Handbags come in a variety of materials, including plastic, paper, non-woven fabric, etc. Their design emphasizes practicality and aesthetics. For example, paper tote bags are commonly used for packaging gifts and high-end goods, with good printing effects and high-end texture; Non woven tote bags are an environmentally friendly choice, suitable for use in shopping bags and promotional bags. The handle of a handbag can be made using different manufacturing processes according to different materials and design requirements, such as plastic handles, rope handles, cloth strap handles, etc., to meet different usage needs.
3D bag
A 3D bag is a packaging bag with a three-dimensional shape, resembling a box in appearance. This type of packaging bag has a unique three-dimensional effect and good display effect, and is often used to package high-end gifts and specialty products. The material of a three-dimensional bag is usually plastic film, paper or non-woven fabric, etc., processed through special techniques to give it a certain three-dimensional structure. A three-dimensional bag can not only protect the shape and appearance of the product, but also increase its added value, enhance its grade and attractiveness.
Although packaging bags may seem simple, they actually have a wide variety of types and functions. Different types of packaging bags have their own characteristics in terms of material, function, purpose, and shape, which can meet the packaging needs of different products and occasions. With the continuous advancement of technology and people's increasing awareness of environmental protection, the types and performance of packaging bags are also constantly developing and innovating. In the future, we can look forward to the emergence of more environmentally friendly, intelligent, and multifunctional packaging bags, bringing more convenience and surprises to our lives.
