- 期刊
乾式抄紙之研究（一）單張試紙抄製
Studies on Dry-Formed Paper (Ⅰ) Forming Single Sheets
摘要
本試驗探討試驗室抄製單張乾式紙的試驗機械組裝，抄造參數及紙張性質。以切成3×3cm小片的絨毛木漿，定量地投入熊穀乾式解纖機中，離解成單根纖維，並在解纖筒底部邊緣開口，送入可調節之風量，以分散並傳送纖維通過20目的粗網，停留在的目的成形細網上，形成均勻鬆軟的纖維棉層，網下有離心抽吸機去除空氣產生負壓力使纖維附於網上。纖維棉層經壓平及在兩面分別噴以EVA與ACR混合乳膠液，俟以熱空氣乾燥後再以175℃，一分鐘熱風瞬間熟成定型，即成為乾式紙，其物理性質則隨抄造及噴膠條件之變化而不同，結果以木漿85%，膠合劑含量15%所抄成的紙，其強度及吸水性可比美於市售商品。又以熱熔性纖維定量加入木漿，抄造後加熱熔融接合，亦可抄成乾式紙，雖其樹脂用量較高，吸水性也較差，但設備較簡單，投資低廉且操作簡便。
並列摘要
The purposes of this study are to construct a workable dry-forming handsheet machine, to optimize the forming conditons of the machine and to evaluate the properties of the dry-formed sheets. Air was pumped in through a conduit near the base of a disintegrator to disperse and carry fibers through a 20 mesh dispersion screen and laid upon a 60 mesh forming screen as a soft and uniform fiber pad. A centrifugal suction pump underneath the forming screen removed the air and created a negative pressure to hold the pad. The dry fiber pad was sprayed with a mixture of EVA and ACR latexes alternately on both surfaces and hot air blown at 175℃ for 1 min to cure the adhesive, Physical properties of the dry-formed sheets thus obtained were evaluated. The results was from a composition of 85%fluff pulp and 15% latex have comparable strength and water absorbency as the commercial products. Blending hot-melt fibers with fluff pulp for forming fiber pads and then hot press to bind the fibers can also form good quality dry-formed sheets, albeit with inferior strength and water absorbency. The method does have advantages in simplicity of equipment and ease of forming operations.