Paper-plastic composite bags are widely used in daily life and production. They are irreplaceable packaging bag products. In the use of paper-plastic composite bags, understanding the precautions for use can help us better use paper-plastic composite bags and improve The service life of the paper-plastic composite bag ensures the use effect of the paper-plastic composite bag.Paper-plastic composite bag manufacturersProduction process:
1. Dry compounding method: Dry compounding method is also called dry laminating compounding. Its technological process is: coating solvent-based adhesive on the base film, and the paper-plastic compound bag manufacturer makes the adhesive layer material through the hot drying oven. The solvent in the upper adhesive is completely volatilized, and then combined with the layer substrate under heating and pressure. The total amount of compounding is not only suitable for compounding between plastic films but also compounding between plastic films and aluminum foil and paper.
2. Hot-melt compounding method: This method is that the paper-plastic compound bag manufacturer heats and dissolves the hot-melt adhesive into a flowing form, coats it, and immediately presses and sticks other films for compounding. Compared with dry compounding and wet compounding, its advantages are that there is no need for drying in the hot drying tunnel, the compounding time is cut off, energy saving, low cost, and no solvent pollution. Used for compounding paper, plastic and aluminum foil.
3. Coating method: This method refers to a method of coating a fluid substance on the surface of the film to make the surface of the film adhere to the film. Can improve the film's thermal adhesion, moisture resistance, gas barrier, ultraviolet absorption and antistatic properties.
4. Wet compounding method: Wet compounding method is also called wet compounding. The process is as follows: the surface of the layer base material is coated with a water-soluble or water-emulsion adhesive, and the layer base material is extruded and compounded together with the layer base material in a wet state, and then dried by a hot drying tunnel to remove the solvent , So that the two layers of base material are compounded together.
Paper-plastic composite bags manufacturers remind you that in the daily use of paper-plastic composite bags, the environmental conditions such as the placement environment, temperature, humidity, and light of the paper-plastic composite bags will directly affect the service life of the paper-plastic composite bags, especially when placed outdoors in the open air. The attack of rain, direct sunlight, wind force, insects, ants and mice will accelerate the damage of the tensile strength of the paper-plastic composite bag. Therefore, when paper-plastic bags are used as anti-flood and anti-flood bags and coal bags placed in the open air, the anti-ultraviolet and anti-oxidation capabilities of the paper-plastic bags themselves need to be considered.