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<p style="user-select: auto;"><span style="color: rgb(51, 51, 51);">Many food flexible packaging bags are required high transparency, using the blank base film to compound of large area, but sometimes present transparency undesirable phenomena, professional manufacturer of soft food flexible packaging flat Dali food flexible packaging thought this with adhesive, basal membrane elements such as have a lot to do.</span></p><p style="user-select: auto;"><br></p><p style="user-select: auto;"><span style="color: rgb(51, 51, 51);">1, the adhesive itself color too deep</span></p><p style="user-select: auto;"><br></p><p style="user-select: auto;"><span style="color: rgb(51, 51, 51);">deep yellow, yellow, red, sometimes even soy sauce soup that is dark red, on the film and the corresponding color.</span></p><p style="user-select: auto;"><br></p><p style="user-select: auto;"><span style="color: rgb(51, 51, 51);">so, under the requiring high transparency, should choose light yellow, even the colorless adhesive.</span></p><p style="user-select: auto;"><br></p><p style="user-select: auto;"><span style="color: rgb(51, 51, 51);">2, adhesive solution mixed with dust and other particles in the</span></p><p style="user-select: auto;"><br></p><p style="user-select: auto;"><span style="color: rgb(51, 51, 51);">too much dust in the air of workshop environment, glue drying after blow hot air in has in the tiny dust, glued, on the surface of the rubber composite was sandwiched between two sheet base film center, there are many small points, not transparent.</span></p><p style="user-select: auto;"><br></p><p style="user-select: auto;"><span style="color: rgb(51, 51, 51);">this is about to use adhesive solution 180 wire mesh filter, despite the insoluble particles of adhesive solution, also watch for workshop clean sanitation, let the light on the earth, arid dry, no dust, the dust in the air is less, bake, the inlet of high mesh filter or other available in the eradication of hot air dust filter data.</span></p><p style="user-select: auto;"><br></p><p style="user-select: auto;"><span style="color: rgb(51, 51, 51);">3, the surface tension of the basement membrane is not high,</span></p><p style="user-select: auto;"><br></p><p style="user-select: auto;"><span style="color: rgb(51, 51, 51);">adhesive solution for it cannot be evenly moist, to shorten, monotonous after a film is not uniform, bit by bit, owe good transparency, surface tension is greater than 38 mn/m in this film, or from the beginning, reoccupy after qualified.</span></p><p style="user-select: auto;"><br></p><p style="user-select: auto;"><span style="color: rgb(51, 51, 51);">4, adhesive of the lack of liquidity, poor flattening</span></p><p style="user-select: auto;"><br></p><p style="user-select: auto;"><span style="color: rgb(51, 51, 51);">at this time to switch to liquid adhesive, or can use a bit of a flat solvent, but avoid too much residual solvents and the peculiar smell smell problem of the present.</span></p><p style="user-select: auto;"><br></p><p style="user-select: auto;"><span style="color: rgb(51, 51, 51);">5, the gluing quantity lack of</span></p><p style="user-select: auto;"><br></p><p style="user-select: auto;"><span style="color: rgb(51, 51, 51);">the margin, with small air bubble, spotted or opaque, must check the amount of glue, make its satisfaction and uniform.</span></p><p style="user-select: auto;"><br></p><p style="user-select: auto;"><span style="color: rgb(51, 51, 51);">6, adhesive glue hygroscopic liquid itself, have become turbid, have not solute</span></p><p style="user-select: auto;"><br></p><p style="user-select: auto;"><span style="color: rgb(51, 51, 51);">please start with glue, and use of water, alcohol, acid, amine reactive solvent, etc.</span></p><p style="user-select: auto;"><br></p><p style="user-select: auto;"><span style="color: rgb(51, 51, 51);">7, a began to enter the path when the temperature is too high,</span></p><p style="user-select: auto;"><br></p><p style="user-select: auto;"><span style="color: rgb(51, 51, 51);">drab too fast, make glue layer on the surface of the solvent active transpiration, forms part of the surface layer adhesive solution concentration, surface crust.</span></p><p style="user-select: auto;"><br></p><p style="user-select: auto;"><span style="color: rgb(51, 51, 51);">then when internal heat to deepen to the adhesive solution layer beneath the skin membrane solvent evaporation, break film, constitute a caldera ring, round, also make the rubber is not uniform, opaque.</span></p><p style="user-select: auto;"><br></p><p style="user-select: auto;"><span style="color: rgb(51, 51, 51);">so baked road from the entrance to the exit temperature, should be gradually, from low to high, let solvent orderly, continuously from internal to external transpiration.</span></p><p style="user-select: auto;"><br></p><p style="user-select: auto;"><span style="color: rgb(51, 51, 51);">other, can use different boiling point solvents, rubber surface when heated evaporation of high boiling point solvents to save a long time, without conjunctival surface crust.</span></p><p style="user-select: auto;"><br></p><p style="user-select: auto;"><span style="color: rgb(51, 51, 51);">but to ensure that the same amount of residual solvents qualified, there is no bad smell peculiar smell.</span></p><p style="user-select: auto;"><br></p><p style="user-select: auto;"><span style="color: rgb(51, 51, 51);">8, compound rubber roller have shortcomings</span></p><p style="user-select: auto;"><br></p><p style="user-select: auto;"><span style="color: rgb(51, 51, 51);">a point pressure, gap, opaque.</span></p><p style="user-select: auto;"><br></p><p style="user-select: auto;"><span style="color: rgb(51, 51, 51);">so often to see, if there are faults, even small, good also want to change. </span></p>
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