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2023-12

What are the advantages and disadvantages of flexible packaging composite bags

Flexible packaging composite bags have been deeply integrated into our lives, so what are the shortcomings and advantages! Advantages of soft packaging bags The nature of the color printing packaging bag itself is superior, the water barrier performance is good, in the packaging profession, the use of a wide range, can be packaged food, grains, powder and other forms of different products, can also be packaged electronic products. It can be useful to extend the shelf life and storage period for perishable goods. Color printing bags are light in weight and occupy a small area. They can save space and reduce costs during transportation and storage. Color printing bags can be used for both transportation and sales packaging, with large scale, wide application and easy processing. Compared with other packaging materials, the original data and production cost of color printing bags are lower. Disadvantages of soft packaging bags Mainly to custom processing, no spot, only bear orders, not suitable for delivery time is very tight customers. There is a certain MOQ, not suitable for a small number of customers. Manufacturers only by providing more one-stop value-added services to win customers, to stand in the customer's position to help customers understand the market. Through the enterprise prepress technology design strength, help customers choose the best product design, help customers improve product quality, save costs, and maximize customer benefits, so as to become your fixed customer.

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2023-12

How to distinguish whether the plastic packaging bag is PE or PVC material?

We all know that there are many kinds of plastic bags, but the most common only PE and PVC two kinds of material. PE plastic packaging bags are mainly made of polyethylene (Polyethylene), which has excellent low temperature resistance, good stability, and can withstand the erosion of most acids and bases. PVC plastic packaging bags are mainly made of polyvinyl chloride resin as the main raw material, and are made of PVC film. It has the characteristics of light weight, heat insulation, heat preservation, moisture-proof, flame retardant, etc. So how do we identify the plastic packaging bag is PE or PVC. Identification method: 1. Touch method Touch the surface of the plastic packaging bag, the general PVC plastic bag is sticky and astringent, while the PE plastic bag is milky white, translucent body, feel lubrication. 2. Jitter method Can be used to shake the bag, if it can make a crisp sound, usually PE plastic bags; small and stuffy sound, PVC plastic bags. 3. Combustion method If the conditions permit, the method of combustion can also be used to identify the two materials of PE and PVC. Generally speaking, the flame is blue, the upper end is yellow, and the PE plastic packaging bag emits paraffin odor when burning; it is difficult to burn, the flame is yellow, the upper end is green, and the PVC plastic packaging bag emits irritating hydrochloric acid odor. 4. Water immersion method First, the plastic packaging bag is immersed in water, and after being pressed into water by hand, PE plastic can surface and PVC plastic can sink to the bottom (the density of PE plastic packaging bag is less than water, and the density of PVC plastic packaging bag is greater than water; At normal temperature, it is about 0.92g/cm3 and 1.4g/cm3 respectively). On how to identify the plastic packaging bag is PE or PVC material of this problem, today's chart packaging? Xiaobian introduced here. I believe that through these four methods, we can help you quickly identify the material of the packaging bag.

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2023-12

Misunderstanding of Packaging Use

Since the birth of plastic packaging bags, it has been loved by people for its light, cheap, high-strength and other characteristics. People have become accustomed to using plastic bags to hold things. There are many types of plastic bags on the market, but there are countless types of color, so what kind of good? Will we really choose plastic bags? Although we can almost use plastic bags every day, but for the choice of plastic bags, we tend to go into the misunderstanding. The thicker and stronger the (I) plastic packaging bag, the better. We often see all kinds of plastic bags in our life, so a strong bag must be good. In fact, this is not the case. Plastic packaging bags have strict standards, especially plastic bags used for food packaging. They must be produced by regular manufacturers and have qualified products approved by relevant departments. The quality of these plastic bags will be guaranteed. Food plastic bags must be marked with the words "food. Facing the light can see whether the plastic is clean. Qualified plastic bags are very clean and free of impurities, while inferior plastic bags will see dirty spots and impurities. The thickness of the single side of the plastic bag must be more than 0.025mm, and if the thickness is not reached, the country is prohibited from production and use. (II) plastic packaging colorful, choose color packaging more beautiful. Although there are many kinds of colors in plastic packaging bags, we must be cautious when choosing them. If we use plastic packaging for food products, we must choose simple colors from the perspective of color, so at least it has less additives. Many dark-colored plastic bags are often produced from recycled waste materials, which do not have direct contact with food. (III) plastic packaging bags for repeated use. Many families have the habit of storing waste plastic bags. In fact, it is possible to store waste plastic bags as long as they are clean and tidy, but do not use waste plastic bags in contact with food and skin, which will cause chronic harm to our health.

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2023-12

What is the difference between ordinary packaging bags and food packaging bags

I believe many people do not know, what is the difference between food packaging bags and other packaging bags on the market, in fact, there are many differences between the two. First of all, in the raw materials, food packaging bags to use food grade plastic film manufacturing production, this film is composed of multilayer composite film, that is, we often say that the hard plastic, transparent or printed. Secondly, in use, the food packaging bag should be marked with relevant information, that is, the name of the food, food ingredients, nutritional ingredients, implementation standards, shelf life, storage methods, eating methods, manufacturer's information, etc. It doesn't matter, next, home to introduce the difference between ordinary packaging bags and food packaging bags, take a look at it. Food packaging safety is a worldwide problem. The safety standard of food packaging in China is QS, which is the abbreviation of quality and safety. The dissolution of packaging materials is the key to affecting food safety and hygiene. As early as 1980, the world-famous food packaging expert CONORRELIY discussed in the book "METALCONTAMINATIONOFFOOD". In recent years, there are also regulations in the HACCP safety system. 1. paper packaging. Paper is the oldest and most traditional packaging material, but its unsafe hidden danger can not be ignored. The main reason is that chemicals such as impermeable agent/sizing agent, filler, bleaching agent and dyeing agent should be added to the pulp in the papermaking process. The anti-penetration agent mainly uses rosin soap; the filler uses kaolin, calcium carbonate, titanium dioxide, zinc sulfide, barium sulfate and magnesium silicate; the bleaching agent uses calcium hypoxic acid, liquid chlorine, hypochlorous acid, sodium peroxide and hydrogen peroxide, etc. The dyeing agent uses water-soluble dyes and pigments, the former has acid dyes, alkaline dyes, direct dyes, and the latter has inorganic and organic pigments. 2. plastic packaging, plastic is the most widely used food packaging materials. Plastics can generally be divided into two types: thermal hardening and thermal plasticity. The former includes urea resin UF, phenolic resin PF and trichlorocyanamide resin MF. The latter includes vinyl chloride resin PVC, polyvinylidene chloride resin PVDC, polyethylene PE, polypropylene PP, polystyrene PS, nylon NY, styrene resin AS, styrene resin ABS, polyester resin, such as PET, PEN, etc. According to different resins, different additives and adhesives used in the production of composite materials, such as TDI, TDA, etc.

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