Solvent-free composite has five advantages
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Since the solvent-free composite process and the dry composite process are basically the same, it is more appropriate to compare the advantages and disadvantages of solvent-free composites with the dry-process composites currently used in the composite flexible packaging industry of.
The solventless composite process has the following main advantages over the dry process:
Good environmental adaptability
(1) No solvent is used.
(2) There is no drying process in the drying tunnel, which can save a lot of energy.
(3) The amount of glue applied is small, and the coating amount of the solvent-free composite unit area is about 2/5 of the dry coating amount of the dry composite unit area adhesive.
Good environmental adaptability
The solvent-free composite adhesive is 100% adhesive and does not contain any solvent. Therefore, in the production process, except for the shutdown, a small amount of solvent is needed to clean the rubberized part. No solvent is discharged, and no waste is produced in the production. It will not affect the health of the production workers due to the discharge of a large amount of solvents, nor will it pollute the surrounding environment, which is conducive to clean production.
Helps improve product quality
(1) The composite film does not contaminate the contents of the package due to the residual solvent, and the hygienic reliability of the product is good.
(2) When compounding, the substrate does not cause deformation of the film due to heating of the solvent and the drying tunnel, which is advantageous for ensuring the flatness of the composite film.
(3) When the composite film is printed in the middle, the solvent-free composite is used, and the ink on the printing surface is not deteriorated due to the influence of the solvent in the adhesive.
Safe and hygienic
The solvent-free composite production does not use flammable and explosive organic solvents, so the safety is good; the hygienic performance is not reduced due to the presence of residual solvents in the composite film, and the hygienic performance of the product is good.
Significantly reduce production costs
The processing cost of solvent-free composite is obviously lower than that of the composite composite process, and the cost of the composite process is expected to be reduced to about 60% or less of the dry process, and the economic benefit is extremely remarkable. The low cost of solvent-free compounding is a powerful driving force for the rapid development of solvent-free compounds.