Nazif Özgen KUTLUATA, Çağrı OLGUN, Mahmut GÜR

Atık Emprenyeli Kağıtların Standart Kalite Yüksek Yoğunluklu Lif Levha (HDF) Üretiminde Kullanılabilirliği Üzerine Bir Laboratuvar Denemesi

Bu çalışmanın amacı, farklı türlerdeki emprenye edilmiş atık kağıtların (IP) normal bir HDF üretim hattında kullanılabilirliğinin belirlenmesidir. Bu amaçla endüstriyel olarak üretilen ve levha üretimine hazır liflere, dekor ve overlay olarak adlandırılan emprenye edilmiş kağıt atıklarından üç farklı oranda (%5'ten %15'e kadar) eklenerek HDF paneller üretilmiştir. Üretilen HDF'lerin bazı önemli özellikleri standart test yöntemlerine göre belirlenmiş ve %95 güven aralığında istatistiksel analiz ile değerlendirilmiştir. Değerlendirme sonuçlarına göre, standart bir üretimde %15'e kadar olan overlay ve dekor kağıtlarının kullanımının yoğunluk ve denge rutubeti, kalınlığı şişme (2 saat ve 24 saat) ve eğilme direnci değerleri açısından istatistiksel olarak değerlendirilmesinin mümkün olduğu sonucuna ulaşılmıştır. Ayrıca, atık emprenyeli kağıt türü fark etmeksizin, atık emprenyeli kağıt miktarı arttıkça elastikiyet modülü ve çekme dayanımı değerlerinin genel olarak iyileştiği gözlemlenmiştir. Fakat formaldehit emisyonundaki ciddi derecedeki artış, standart üretim hattında herhangi bir değişiklik yapılmadan bu kağıtların değerlendirilmesinin zor olduğunu göstermiştir

Anahtar Kelimeler:

Emrenyeli kağıt, HDF, mekanik özellikler, fiziksel özellikler, formaldehit emisyonu

A Laboratory Trial on the Usability of Waste Impregnated Papers in Standard Quality High Density Fiberboard (HDF) Production

The aim of this study is that determination of the usability of the different types of waste impregnated papers (IP) in a standard HDF production line. For this purpose, the HDF panels were produced from industrial prepared fibers and waste of IP, called decor and overlay, preparation lines by three different ratios (from 5% to 15%). Some important properties of HDF’s were determined according to standard test methods and were evaluated by statistical analysis in a 95% confidence interval. According to the evaluation results, it was concluded that it is possible to statistically evaluate the use of overlay and decor papers up to 15% in a standard production in terms of density, and equilibrium moisture, thickness swelling (2 h and 24 h), and modulus of rupture values. In addition, it was observed that the modulus of elasticity and tensile strength values generally improved as the amount of waste paper increased, regardless of the type of waste paper. However, the significant increase in formaldehyde emission showed that evaluating these waste papers without changing in the standard production line is difficult.

Keywords:

Impregnated papers, HDF, Mechanical properties, Physical properties, Formaldehyde emission,

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