Solid content
The one with high solid content is better. For example, if the solid content of a certain adhesive is 25%, the solvent will account for 75%, and the solvent only plays a uniform role, so that the adhesive is evenly coated on the film. After that, the solvent volatilizes and has no effect on the composite fastness. If the same solid content of 30% adhesive is used, then the solvent only accounts for 70%, which can save 5% of the solvent. Therefore, choosing the adhesive with high solid content is an effective way to reduce the use cost.
Initial viscosity
The initial viscosity should be selected according to the actual production requirements of the enterprise. If the higher composite efficiency is required, the adhesive with relatively low initial viscosity should be selected. In this way, the advection is good, which can ensure that the compound machine has a higher running speed. If it is a more urgent emergency order, the adhesive with high initial viscosity can be selected after the completion of the composite process That is, the next step of processing can be carried out. In specific circumstances, the two aspects achieve the purpose of improving efficiency, and the improvement of efficiency also realizes the cost reduction.
Solid holding time and temperature
The solid holding time of the adhesive should be short and the solid holding temperature should be low. If the adhesive can realize rapid curing, the curing time of the composite film in the oven will be short, which can effectively reduce the power loss; if the adhesive can achieve low-temperature curing, then in the South or summer, the composite film can complete natural aging at room temperature. Especially in areas and periods of power shortage, this feature is more valuable.
Drying rate
When choosing adhesives, it is necessary to measure whether the drying speed matches the bonding process. The general manual bonding process is slow and needs a long initial drying time, while the machine bonding process is very fast and requires a short initial drying time. For the drying time, the faster the better in most cases, so as to enter the next process as soon as possible.
PH value
Synthetic resin adhesives are weak acid, which will not have a negative impact on the bonding process, but sodium silicate and starch adhesives are more alkaline. The high alkalinity will not only corrode the operators and equipment, but also corrode the adherent substances, forming spots that affect the appearance, and also reduce the moisture resistance of flexible packaging products. Therefore, the influence of pH value on products should be considered when purchasing adhesives.
Dongguan Beite packaging materials Co., Ltd. - located in Dongguan City, the world's manufacturing city, is a subsidiary of Beite packaging (China) Co., Ltd., with a plant area of 6000 square meters. It is a flexible packaging enterprise integrating R & D, production and sales. It has a complete set of domestic advanced production equipment, a scientific and humanized management system and a group of experienced technical personnel For backing, to provide customers with quality products and first-class service.
The company produces composite bags, roll film, fruit bags, aluminum foil bags, suction mouth bags, self-supporting bags, zipper bags, anti-static bags, special-shaped bags, etc., which are suitable for the internal and external packaging of food, daily chemicals, electronics, toys, medicine, cosmetics, industrial products and other industries.
We uphold the integrity of cooperation, good quality, good service business philosophy, won the industry's approval, products sold to all over the world; welcome friends from all walks of life to inquire, visit our factory to investigate guidance and business negotiations.