Solvent-free composite nylon high-temperature cooking bags of process control points

From compound before printing control, compound control, curing three aspects, to formulate solvent-free composite nylon high-temperature cooking bags of process control points. 1, compound before printing control, high temperature cooking A solvent-free composite product when printing the color and the right dosage of curing agent. General ink manufacturer in proportion to the ink will give reference, at the same time, flexible packaging test in factory production should be done before the use, dosage of curing agent, if less curing agent with low degree of crosslinking of the resin, ink layer of adhesive strength, heat resistance, hydrolysis resistance will reduce; Excessive will happen if too many curing agent, crosslinking, affect the polymer crystallization and micro phase separation between rubber increase cohesion, ink layer too contraction, causes the delaminating, also can cause more operational problems, such as composite bag will harden. B, to fully before printing film composite curing. High-temperature cooking solvent-free glue layer may and ink layer for reaction, cause the ink crosslinking curing is not sufficient, and thin film layers in the subsequent cooking, therefore, to fully cure before printing film composite. C, to avoid a mixture of different series of ink. D, control the use of the old ink. 2, A composite control, high temperature cooking solvent-free glue should choose to have good resistance to medium ( Heat, cold, acid, alkali, salt, oil, spicy, etc. ) And non-toxic, no smell, good health security model. In fact, high temperature cooking packaging, has always been the difficulty in the field of solvent-free composite, also become a solvent-free composite technology promotion process not the past. In fact, high temperature cooking packaging for successful implementation of solvent-free composite technology, the key is to develop can be used for high temperature cooking packaging solvent-free composite glue. Ability of high temperature cooking packaging solvent-free glue become the focus of many glue enterprise research. B, high-temperature cooking solvent-free composite glue ingredient ratio is reasonable. Although the manufacturer will give you a ratio of glue, glue but is often a probably or theory formula, to achieve good composite effect, we must develop a test, find one with other material, environment, such as matching ratio, which is not only to ensure that the curing agent and resin crosslinking fully, without excessive crosslinking, layering to avoid, and high-temperature cooking. C, high-temperature cooking solvent-free composite compared with ordinary products, one is the need to pay attention to ensure uniform rubber mixing, avoid excessive local crosslinking curing and the situation of local low degree of crosslinking resulted in high-temperature cooking stratification, 2 it is to pay attention to the glue, rubber mixing machine, rubber roller temperature, keep the glue viscosity at the right moment, guarantee the gluing quantity in the process of composite. 3, curing compared with ordinary solvent-free composite low temperature and room temperature curing, high temperature cooking solvent-free composite to pay special attention to the process design and management of curing process, for curing temperature, time, design reasonable, guarantee the slaking fully. Some of our test operator, in view of the front a solvent-free glue test, suggest to curing temperature above 55 ℃, the curing time extended in more than 96 h, curing chamber door is often to open and close, as far as possible do not open the door, after composite membrane into until the specified time, one-time cure fully take out again. According to the operation experience, a product if cannot one-time cure fully, in comparison with the stripping force of secondary curing a cure fully stripping force will send a lot of layering easily, and lead to high temperature cooking, too.