A product often used in paper/plastic packaging is a sealant. Any kind of sealing glue is not a panacea, and a sealing glue can only be suitable for a certain or a certain type of specific adherent substance.
Some packaging companies hold a "trial and try" mental blind glue, which wastes time and energy and causes great losses. Nowadays, BOPP (biaxially oriented polypropylene film) paper, polished paper, PET (polyester film) paper, and high-glossy paper are commonly used as bonding materials for various packaging companies. In fact, such products only require multi-functional paper/ Plastic seal glue, this type of glue can adapt to all the requirements of the above materials, and more than 98% of the packaging company's products are the above several materials. In addition, some packaging companies have film/film bonding requirements, and can use multi-functional plastic/plastic sealing glue. It can also be used for BOPP/paper, polishing/paper, PET/paper, high gloss, in addition to film/film connection. Printing paper/paper, but this product can only be used for manual bonding. Taken together, the above two products can basically meet all the bonding requirements of printing and packaging companies, except for special requirements such as PVC/paper, PVC/wood, UV/paper, etc. These products can be used to solve with other types of glue.
In addition to solving product features, you must also understand the quality of the product. Any kind of sealing glue has a certain chemical mark, and the chemical standard is determined by the formula and process. The chemical standards of the sealant must be reflected in good physical standards, that is, to maintain the viscosity, to meet the needs of users. Many domestic packaging companies appear to have poor adhesion, or debonded products and brittle films, which are basically related to chemical properties. He often hears some printing and packaging companies saying: “Some days of glue heat must be degummed, some glue must be degummed on cold days, and some glues should not be stored for cold days or hot days.” In fact, this is how to choose and use sealants. Due to the deep understanding, even more serious is that some manufacturers of sealing glues do not know why they need to degumming, how to formulate formulas, formulate processes and develop products from the special requirements of the packaging industry. Therefore, it is not surprising that quality problems occur during use.
Choose sealing glue, quality is certainly the first one, the price is second. Some packaging companies blindly believe that the higher the price is, the better the quality is, or the lower the price is, the worse the quality is. These views are very one-sided, and as a result, some packaging companies have both spent money and caused great losses. In fact, sealing glue only occupies a small proportion of the cost of a packaged product, so it is reasonable to first seek a suitable price under the premise of understanding the product's characteristics, quality standards and performance.
The aluminum layer on the surface of the aluminized film is very susceptible to moisture or oxidation with water, so that the relative humidity of the environment is controlled during the rewinding process so as to prevent the water vapor from being trapped in the film. It should be packed strictly and stored in a clean, cool and dry environment. Prevent rain and sunlight during transportation. When printing and dry-drying, the environmental humidity should be controlled. Especially in the wet and rainy southern regions, the unwrapped film roll should be used up once to prevent moisture from deteriorating.
With the continuous progress of vacuum coating technology in China, and the development of coating equipment in the direction of wide width, high efficiency, low energy consumption, and environmental protection, aluminum-plated films and their extension materials are highlighting their competitive advantages with high performance and low cost. The market brings new vitality; at the same time, it shows that constantly optimizing the value chain and implementing low-cost differentiation strategy through technological advancement is a magic weapon for the victory of flexible packaging companies in the market.
