Solutions To Common Problems In Using Waterborne PU Adhesive

< p > 1, training for factory managers? < /p >

< p > first, field management personnel were trained with < a href= "http://cailiao.sjfzxm.com/" > water glue < /a > concept change.

Secondly, attention should be paid to the training of drying conditions, painting standards, adhesion and quality inspection.

< /p >

< p > 2, how to solve the problem of degumming when using water-based PU adhesive? < /p >

< p > (1) to observe and analyze the degumming place, whether the material is not adhesive due to the poor treatment of the surface treatment agent. If the bad surface treatment agent causes the film to fall off, it is suggested to replace the surface treatment agent.

< /p >

< p > (2) if both sides have glue, but there is a phenomenon of wire drawing, it is usually due to too thick or bad drying of waterborne PU adhesive.

< /p >

< p > (3) more complicated technical problems should consult the technician of glue supplier promptly and request technical support.

< /p >

< p > 3, how to make up glue for small area degumming? < /p >

< p > the filling method is the same as that of the oil glue. Because the waterborne PU adhesive is slow in drying and easy to accumulate, it is not recommended to use the waterborne PU glue as the filling liquid. The ordinary oil adhesive and the hardener can be selected to make up the glue and to press after drying.

< /p >

< p > 4, how to make use of water-borne PU glue? < /p >

< p > (1) because water-based PU glue has little effect on the infiltration of some materials, reinforcement technology is usually used to enhance adhesive film adhesion.

< /p >

< p > (2) reinforcing agent usually adopts PU products with low viscosity and high permeability, which can achieve good reinforcement effect.

< /p >

< p > (3) the reinforcing agent is usually used before washing the water-based PU adhesive after finishing the treatment agent. Every process must be dried before the next process can be carried out.

< /p >

< p > 5, how to clean the waterborne PU adhesive coating too high or over the line? < /p >

< p > (1) when it is too high, it can be erased in time. It is very easy to handle. When the individual materials are difficult to clean, they can be cleaned with the glue machine or raw film.

< /p >

< p > (2) < a href= "//www.sjfzxm.com/" target= "_blank" > shoes < /a > surface cleaning can be treated in the same way, it is recommended not to use organic solvents to clean the adhesive line, because it is easy to cause the wash glue.

< /p >

< p > 6, what happens when the eyes or other parts of the body are accidentally exposed to water-borne PU glue? < /p >

< p > (1) rinse immediately with water after splashing water PU glue. If there is still a feeling of discomfort, please consult the doctor in time, but it will not cause significant harm to the eyes.

< /p >

< p > (2) skin contact does not produce mucosal damage < /p >.

< p > (3) there will be no inhalation hazard and no harm to the respiratory system and nerve center of the human body.

< /p >

< p > (4) there is no case of occupational hazards in single long-term contact.

< /p >

< p > 7, how to intuitively judge the failure of waterborne PU adhesive? < /p >

< p > (1) the aqueous PU adhesive is a milky white viscous liquid under normal condition. The colloid viscosity is homogeneous and dispersed uniformly.

< /p >

< p > (2) if surface thicker or thicker, the surface is demulsified, that is, it has been stored invalid.

< /p >

< p > (3) the storage failure glue needs to be retested before it can be judged whether it can be used.

< /p >

< p > 8, is it necessary to change the equipment for the use of water-borne PU adhesive? < /p >

< p > no need, existing equipment.

< /p >