A kind of method when maintaining physical property includes thermal insulation for manufacturing be arranged to the to exhibit various,curious performances effect of charcoal of the polyethylene foam sheet containing charcoal, when buffering and plasticity. (i) a kind of method, includes a step for manufacturing the polyethylene foam sheet containing charcoal, passes through mix polyethylene resin 66. for manufacturing a polymer blocks6 weight % and in 125~135 degrees Celsius of foaming agent 33.Simultaneously cutting resin obtains a foaming mixture particle to polyethylene resin particle size to 3 weight % 10~20 minutes; (ii) a step is used to manufacture and polyvinyl resin 75.0 weight % and charcoal 25.The carbon mixture of 0 kind of weight % mixing has pure 99% by the same method of (i) step; (iii) a step is used to manufacture a crosslinking mixture comprising polyvinyl resin 93.3 weight % and crosslinking agent 6.7 weight %; (iv) a step is used to manufacture a magma magnesiae comprising polyvinyl resin 90.10 weight % of 0 weight % and magnesium hydroxide; (v) a step is used for through equably mix polyethylene 22.4 weight %, blowing agent blends 49.5 weight %, carbon mixture 16.8 weight %, crosslinking mixture 8.8 weight % and magma magnesiae 2.5 weight % manufacture a resin compound; (vi) a step is to melt the resin mixture squeezed out; (vii) a step is used to form melt-extruded resin mixture to a flat template; (viii) a step is used to form charcoal polyethylene foam sheet; (ix) a step is for drawing charcoal polyethylene foam sheet; For cooling down one step of (x) of charcoal polyethylene foam sheet; (xi), a step are used to wind cooling charcoal polyethylene foam sheet.
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