PURPOSE:To reduce the cost and to improve the flexibility by fusing polyethylene in stripe at specific position on a sheet member while winding a lump correction sheet to the sheet member except at said fusing section. CONSTITUTION:Polyethylene 21 is fused in stripe at specific position on long sheet member 10 while lump correction sheet 31 is wound to the sheet member 10 except the fusing section to wind the sheet member 10 together with the correction sheet 31. Consequently, the material cost is reduced when compared with such sheet as laminated entirely with polyethylene while since the stipe member 21 thermally fused with polyethylene is solidified through abrupt cooling to lose the viscosity, it can be wound together with the correction sheet 31 immediately after fusing and carrier to other place to prepare products resulting in improvement of flexibility.
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