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2023-12

What are the advantages and disadvantages of flexible composite packaging bags?

Flexible composite packaging bags have become deeply embedded in our daily lives. So what are their advantages and disadvantages? Let’s find out together! Advantages of Flexible Packaging Bags Color-printed packaging bags boast excellent intrinsic properties, with superior water- and gas-barrier performance. They are widely used across the packaging industry, suitable for packaging a diverse range of products—including food, grains, powdered substances, and even electronic goods. For perishable items, they can effectively extend shelf life and storage duration. Lightweight and space-efficient, these bags help save on transportation and storage costs, thereby reducing overall expenses. Moreover, color-printed packaging bags can serve both as shipping and retail packaging; they come in a wide range of sizes, are highly versatile, easy to process, and—compared with other packaging materials—require lower raw-material and production costs. Disadvantages of Flexible Packaging Bags Primarily manufactured on a custom-order basis, these bags are not kept in stock and are produced only upon receipt of an order, making them unsuitable for customers with very tight delivery deadlines. In addition, there is a minimum order quantity requirement, which may not be practical for customers placing small orders. To win and retain customers, manufacturers must offer more comprehensive, one-stop value-added services and put themselves in the customer’s shoes to help clients better understand the market. By leveraging advanced pre-press design and production technologies, manufacturers can assist customers in selecting the optimal product design solution, enhancing product quality, reducing costs, and maximizing customer benefits—thereby fostering long-term loyalty.

2023-12-26

What are the advantages and disadvantages of flexible composite packaging bags?

2023-12

How to Address Quality Issues with Aluminum Foil Bags

In the entire production process of packaging bags, deviations are inevitable at some stage, which may lead to product issues. How to coordinate with customers to address these problems, and whether there are established guidelines for doing so, are crucial for effectively resolving customers’ real-world concerns. Food bags, food packaging bags, 1. When aluminum foil bags encounter quality issues and require handling, it is essential to systematically collect and analyze relevant data. 2. Upon receiving a customer complaint, first ascertain the nature of the issue and document the associated data; if necessary, convene a special meeting to discuss the problem and develop a targeted solution. 3. Make informed decisions on whether to accept returns or not, and prioritize on-site problem resolution at the customer’s location. Follow up with appropriate emergency measures and solutions, while maintaining clear communication with the customer and providing guidance on proper usage. Vacuum packaging bags, tea packaging bags, 4. When addressing quality issues on-site, adhere to the principle of “letting the customer speak first and thoroughly understanding all aspects of the problem.” 5. Implement the “four no’s” principle: do not let go until the root cause is identified, do not let go until the responsible party is determined, do not let go until the problem is resolved, and do not let go until adequate training has been provided. Upon receiving a customer quality complaint, respond and report promptly, collate the information related to the quality issue, and simultaneously inform both immediate supervisors and senior management. Composite packaging bags, plastic packaging bags

2023-12-26

How to Address Quality Issues with Aluminum Foil Bags

2023-12

How can you tell whether a plastic packaging bag is made of PE or PVC?

As everyone knows, plastic packaging bags are made from a variety of materials, but the two most common are PE and PVC. PE plastic bags are primarily manufactured from polyethylene, which offers excellent low-temperature resistance, good stability, and strong resistance to most acids and alkalis. PVC plastic bags, on the other hand, are mainly made from polyvinyl chloride resin and are produced by processing PVC film into a type of plastic bag. They are lightweight, thermally insulating, heat-preserving, moisture-proof, and flame-retardant. So how can we tell whether a plastic packaging bag is made of PE or PVC? There are four main methods: Identification Methods: 1. The Touch Test Run your hand over the surface of the plastic bag: PVC bags typically feel sticky and slightly rough, while PE bags are milky white and semi-transparent, with a smooth, lubricated texture. 2. The Shake Test Vigorously shake the bag with your hand; if it produces a crisp, clear sound, it is likely a PE bag; if the sound is muffled and dull, it is probably a PVC bag. 3. The Burn Test When conditions permit, you can also use burning to distinguish between PE and PVC. Generally speaking, if the flame is blue with a yellow tip and emits a paraffin-like odor during combustion, the bag is made of PE; if it is difficult to ignite, the flame is yellow with a greenish tip, and it gives off a pungent hydrochloric acid smell, then the bag is made of PVC. 4. The Water-Immersion Test First immerse the plastic bag in water and press it down. If it floats to the surface, it is PE; if it sinks to the bottom, it is PVC. (The density of PE bags is less than that of water, while PVC bags are denser—about 0.92 g/cm³ for PE and 1.4 g/cm³ for PVC at room temperature.) That concludes our introduction today on how to determine whether a plastic packaging bag is made of PE or PVC. We believe these four methods will help you quickly identify the material of the bag.

2023-12-26

How can you tell whether a plastic packaging bag is made of PE or PVC?

2023-12

A Brief Discussion of Common Misconceptions in Packaging Usage

Since the advent of plastic packaging bags, their lightweight, low cost, and high strength have made them widely popular. People have grown accustomed to using plastic bags for carrying items. The market offers a vast array of plastic bag types, with countless variations in color alone—so which kind is truly the best? Do we really make informed choices when selecting plastic bags? Although we use plastic bags almost every day, our decisions about which ones to buy often fall into common misconceptions. (1) The thicker the plastic bag, the sturdier it must be. In daily life, we encounter many different kinds of plastic bags; does that mean the sturdier the bag, the better? Not necessarily. Plastic bags are subject to strict standards, especially those used for food packaging. Only products manufactured by reputable manufacturers and approved by the relevant authorities should be chosen, as only such bags can guarantee quality. Food-grade plastic bags must be clearly labeled “For Food Use.” When held up to the light, you can assess whether the material is clean. Qualified bags are spotless and free of impurities, whereas inferior ones may show stains or foreign matter. The thickness of a single layer of the bag must be at least 0.025 mm; bags thinner than this are prohibited from production and use by national regulations. (2) Colorful plastic bags look attractive—why not choose the most vibrant ones? While plastic bags come in a wide range of colors, caution is essential when making a selection. For bags intended to hold food, it’s best to opt for simpler, more muted hues, as these typically contain fewer additives. Many dark-colored bags are made from recycled waste materials, which are unsuitable for direct contact with food. (3) Reusing plastic bags. Many households keep old plastic bags on hand. In principle, as long as they are stored neatly and used appropriately, reusing them is acceptable. However, never use old plastic bags to come into contact with food or skin, as this can lead to chronic health risks.

2023-12-26

A Brief Discussion of Common Misconceptions in Packaging Usage

2023-12

A Brief Discussion on Packaging Bag Design

Designing an effective packaging bag involves three key aspects: visual design, structural design, and color design. Only by comprehensively addressing these three elements can the design fully realize its potential. Packaging design is not limited to technology and art; it also encompasses numerous other considerations. Therefore, creating a well-designed package is no easy task. In packaging design, form design—also known as shape design—refers to the external appearance of the package. The goal is to use the package’s physical form to convey meaning and appeal visually. Beyond protecting the product, packaging must also boast an attractive aesthetic and practical functionality. The structural design of packaging should prioritize protection, convenience, and reusability. By applying scientific principles to integrate the internal and external components of the package, an optimal design can be achieved. A well-executed structural design balances the need to safeguard the product with ease of use, while also maximizing the potential for repeated use.

2023-12-26

A Brief Discussion on Packaging Bag Design

2023-12

What are the differences between ordinary packaging bags and food packaging bags?

Many people may not realize the differences between food packaging bags and other types of packaging bags; in fact, there are numerous distinctions between the two. First, in terms of raw materials, food packaging bags must be made from food-grade plastic films, which are typically multilayer composite films—commonly referred to as rigid plastics—that can be either transparent or printed. Second, regarding usage, food packaging bags are required to display specific information, including the name of the food product, its ingredients, nutritional values, applicable standards, shelf life, storage instructions, consumption guidelines, and details about the manufacturer. So, do you know what the key differences are between ordinary packaging bags and food packaging bags? If not, don’t worry—below we will explain these differences in detail. Let’s take a look. Food packaging safety is a global concern, and in China, the safety standard for food packaging is QS, which stands for “Quality and Safety.” The leaching of substances from packaging materials is a critical factor affecting food safety and hygiene. As early as 1980, the renowned international food packaging expert CONORRELIY discussed this issue in his book “METAL CONTAMINATION OF FOOD,” and it has since been incorporated into HACCP safety systems as well. First, paper packaging. Paper is the oldest and most traditional packaging material, but its potential safety risks should not be overlooked. The main reason is that during the paper-making process, chemicals such as water-repellent agents/size agents, fillers, bleaching agents, and dyes are added to the pulp. Water-repellent agents typically include rosin soap; fillers may consist of kaolin, calcium carbonate, titanium dioxide, zinc sulfide, barium sulfate, and magnesium silicate; bleaching agents include calcium hypochlorite, liquid chlorine, hypochlorous acid, sodium peroxide, and hydrogen peroxide; and dyes comprise water-soluble dyes and pigments, with the former including acidic dyes, basic dyes, and direct dyes, and the latter including both inorganic and organic pigments. Second, plastic packaging. Plastic is the most widely used material for food packaging. Plastics are generally classified into thermosetting and thermoplastic types. Thermosetting plastics include urea-formaldehyde resin (UF), phenolic resin (PF), and melamine-formaldehyde resin (MF); while thermoplastics encompass polyvinyl chloride (PVC), polyvinylidene chloride (PVDC), polyethylene (PE), polypropylene (PP), polystyrene (PS), nylon (NY), styrene resin (AS), acrylonitrile-butadiene-styrene (ABS), and polyester resins such as PET and PEN. Depending on the type of resin used, different additives are employed, along with adhesives like TDI and TDA when producing composite materials.

2023-12-26

What are the differences between ordinary packaging bags and food packaging bags?

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