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                What is the initial adhesion of the solvent-free composite?

                From: Jiangxi Beidemeike Machine Tech Inc.  Date:2017-11-30 15:00:40  Hits:728  Belong to:Company News

                 

                The initial adhesion of solvent-free composite is different from that of the adhesive brand, compared with the maximum adhesion or relative to the dry type

                For example, the initial adhesive force of a typical product is 0.3 ~

                0.5 N / 15 mm.

                11. Can you make a cooking bag without solvent? How does the effect compare to dry?

                A) without solvent can do 121 ℃ high temperature cooking bags, composite has practical application in domestic, and have a small amount of product

                My mouth.

                B) it is necessary to choose special adhesive for high temperature cooking bag without solvent. The adhesive of ordinary materials can be purchased at home

                (such as boshi gum, kangda, etc.), but the aluminum foil compound adhesive currently needs to be imported.

                C) solvent-free composite is 121 ℃ high temperature cooking bags effect similar to dry compound, fully meets the requirement.

                D) 135 ℃ high temperature cooking bags need to be validated, domestic no application at present.

                12. What dry compound can be made of materials with no solvent composite?

                A) theoretically dry compound can be made without solvent, at least in the packaging field.

                B) due to the characteristics of solvent-free composite, some materials need to be more elaborate in operation and process control. in

                In other words, the control of certain materials is harder than the dry compound.

                C) after the dry compound, it can be recombined immediately, but no solvent compound needs to be cured after a certain period of time (e.g. 8

                12 hours. The curing time is related to the substrate, adhesives and curing conditions.

                13. The initial adhesion of solvent-free compound is very weak and the finished product has to be solidified to be seen. How to judge composite products before curing

                Are you qualified to avoid the production of unqualified products?

                A) there is no effective way to judge whether the product is qualified before curing, because the curing process itself

                (such as temperature and humidity and uniformity) can affect product quality.

                B) the quality of solvent-free compound products mainly depends on the following factors:

                ? adhesive of correct selection, mix proportion of accurate and stable control; ? the appropriate control of strip tension, mainly tension size, two paragraphs of material matching, winding tension taper tension

                And so on; ? glue quantity size; ? curing condition and curing time, curing temperature and humidity and its uniformity in particular.

                C) the above factors are controlled in the pre-composite, composite and post-composite steps, because all factors can be effective

                Controlled, so the compound quality can also be controlled effectively.

                D) but generally the product of the new structure needs to be tested or borrowed from others' experience.

                E) due to the limited number of actual packaging materials and composite structures, the number of products in each packing plant is less

                It is not difficult to actually use and master this.

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