A kind of manufacturing process of sandwich paper in grinding steel paper
A production process and technology of sandwich paper, which is applied in papermaking, paper, textiles and papermaking, etc., can solve the problems of low tearing degree and inability to test sandwich paper, and achieve the effects of reducing fiber length, improving binding force and enhancing plasticity
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[0029] The embodiment is basically as attached figure 1 Shown:
[0030] Step 1, pulping: prepare wood fiber (length 2-4mm, diameter about 0.035mm), polyester ultra-short fiber (specification 1.67dtex, length 5mm, diameter about 0.035mm, also known as polyethylene terephthalate ester), binder (polyvinyl alcohol fiber with a hydrolysis temperature of 60°C) and dispersant (non-ionic polyethylene oxide); the wood fiber is pulped, and the wet weight of pulp obtained by pulping is 15-17g.
[0031] Step 2, partial beating: Divide the pulp into two parts, beating the pulp with a proportion of 60-75%, and not beating the pulp with a proportion of 25-40%; adopt the beating method of dividing the silk broom After the beating of 60-75% of the slurry is completed, the degree of beating is 20-30°SR, and the wet weight is 10-15g.
[0032] Step 3, pulping: send all the pulped and unbeaten pulp into the pulping tank, and add polyester ultra-short fiber and adhesive to the pulping tank, so th...
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