With glue is improper operation, these troubles at any time 'you'
With glue is improper operation, these troubles 'seek' a glue with improper operation at any time, these troubles at any time 'seek'
1, weighing, and glue the main agent, curing agent, ethyl various ingredients such as weighing, the negative phenomena that can lead to
1) composite membrane mesoglea become hard brittle or cannot cure, lowered the 'soft' sex of compound bag, rubber toughness is reduced, by external bag easily when blasting, or appear the interlayer bonding is not strong, stratification.
(2) the preparation of working liquid viscosity and the concentration change, make the gluing quantity change, appear too little or too much phenomenon, lead to the common appearance of the composite film cost variation and change.
2, mixing unevenly: with glue when the component joined the order of the plastic bucket allocation according to the above step with glue together sequence of operations to join, in particular, the main agent and curing mix are not allowed to contact each other. When the mixture and stir evenly, formulate the working fluid can appear everywhere in viscosity, concentration, ratio of uneven, make the appearance of the composite film, adhesive strength and robustness are can not meet the normal demand.
3, adding solvent operation bad influence: make good working liquid in actual use, often due to the use of the working fluid viscosity change need to add the ethyl ester to adjust the viscosity of working liquid. When adding ethyl ester is forbidden to working liquid in large quantities directly to join in the glue tank, tank caused by ethyl directly join will join the parts of the working liquid viscosity, density, etc. , this part of the gluing quantity thousand quantity will be less salty, suddenly composite film quality problem ( Appearance of bubble, lower stripping) 。
the correct operation is: if you don't stop the request, the degree of working liquid in the glue tank as far as possible put plastic barrels ( Note the glue tank glue to glue) , according to the amount of working liquid in the plastic bucket, a small, segmented to join, join and stir well, plastic barrels as working fluid viscosity, and testing until adjusted to the same as the working fluid viscosity and adhesive, be adjusted working liquid directly into the glue tank in use. Conversion table packaging printing knowledge
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