Introduce the common problems of adhesive and spray glue in winter
Release time:
2021-10-21
The adhesive is unevenly applied, thick in some places and thin in some places, which will cause uneven pressure and wind in the lamination process. At this time, when using a thickness gauge to adjust the glue thickness around and in the middle of the glue tank, it must be consistent.
adhesive
1. The joint parts burst:
(1) The adhesive is unevenly applied, thick in some places and thin in some places, which will cause uneven pressure and wind in the lamination process. At this time, when using a thickness gauge to adjust the glue thickness around and in the middle of the glue tank, it must be consistent.
(2) The adhesive glue is wet. Since the glue is composed of resin and solvent, when the solvent is not completely volatilized, the bonding water cannot achieve the best bonding strength, and the solvent of the glue cannot be volatilized after bonding, so the bonding surface is always in " In the "soaked" state, the adhesion is bound to be poor. Therefore, it is necessary to adjust the drum temperature and drum speed.
(3) The amount of adhesive glue is not enough. Different materials have different glue usage standards. For materials with fine and smooth surfaces, the amount of glue can be reduced. However, for materials with fine pores, large pores and loose structures, the glue must be thicker to achieve good results.
2. Some materials will roll up after removing the glue. For different materials, Shanghai Chenxiang Industrial uses different glues, some need soft ones, and some need thin glues. This is also a test for on-site machine operators.
3. Air retention caused entirely by operating factors may be caused by the upper glue, uneven pressurization and uneven surface of the material itself.
Spray glue
1. The glue is not easy to spray. Affected by the climate, the viscosity of glue is higher in autumn and winter, resulting in poor spraying effect. At this point, we can use a special diluent to dilute it to an appropriate viscosity before continuing.
2. The spray glue is difficult to dry and the temperature is also very low. Some customers use our glue company's thinner to dilute the glue. During the spraying process, the air pressure and flow rate of the spray gun are not controlled. The spray gun should be sprayed in the form of dots and should not be sprayed too thick. The spray gun is 50-90 cm away from the spraying surface at a 45-degree angle, and the spraying is even.
3. When making the sofa, the sponge feels okay at the initial stage of installation, but when the leather case is put on, the sponge will come off the glue, which has a considerable relationship with the previous operation. Generally speaking, compared with the tension of 2 days or more, the adhesive tension of the spray glue produced by Shanghai Chenxiang Industry is very small. Please adjust the operation according to the normal operation.
Related news
Changzhou Zhenghe Fine Chemical Co., Ltd.
Address: Luoyang Town Industrial Development Zone, Changzhou City, Jiangsu Province
Phone: 0519-88550566
Fax: 0519-88550166
E-mail: 1007559360@qq.com
Changzhou Zhenghe Fine Chemical Co., Ltd.
Address: No. 16-15, Changjiang Plastics Market, Jiangsu
Phone: 0519-85766615
Fax: 0519-85766515
Mobile phone: 13806125733
Email: 1914253742@qq.com
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