Pengaruh Jenis Kayu dan Jumlah Lapisan Terhadap Sifat Venir Lamina (The Effect of Wood Species and the Number of Layer for Laminated Veener Properties)

ABSTRAK

Penelitian ini bertujuan untuk mengetahui pengaruh jenis kayu dan jumlah lapisan venir terhadap sifat venir lamina. Jenis kayu yang digunakan terdiri dari sengon, pinus, dan campuran sengon dengan pinus. Dibuat venir lamina dengan jumlah lapisan bervariasi, yaitu 4, 6, dan 8 lapis. Variasi jumlah lapisan bertujuan agar dapat diketahui mutu venir lamina yang dihasilkan dari berbagai variasi jumlah lapisan tersebut. Perekat yang digunakan adalah urea formaldehida (UF) cair. Hasil penelitian menunjukkan bahwa rata-rata kadar air venir lamina 10,76%, kerapatan 0,54 g/cm3, delaminasi 5,8%, MOE 124.108 kg/cm2, dan MOR 450,74 kg/cm2. Kadar air dan hasil uji delaminasi venir lamina yang dibuat semuanya memenuhi Standar Nasional Indonesia. Secara statistik jenis kayu berpengaruh nyata terhadap kadar air, kerapatan, MOE, dan MOR, sedangkan jumlah lapisan venir berpengaruh nyata terhadap kadar air, kerapatan, delaminasi, MOE, dan MOR. Makin banyak jumlah lapisan venir makin tinggi nilai kadar air, kerapatan, delaminasi, dan MOR.

Kata kunci: jumlah lapisan, pinus, sengon, urea formaldehida, venir lamina

ABSTRACT

This study aims to determine the effect of wood species and the number of layers of veneer against laminated veneer properties. Wood species consist of sengon, pine, and mixed pine sengon. Laminated veener made by a number of layers consist of 4, 6, and 8 layers. The difference of a number of layers was to identify quality of laminated veneer. The adhesive used is urea formaldehyde (UF) liquid.  The results showed that the average moisture content of 10.76%, density of 0.54 g/cm3, delamination 5.8%, MOE 124.108 kg/cm2, and MOR 450.74 kg/cm2. The moisture content and delamination made all meet the Indonesian National Standard. Statistically, wood species were a significant effect on moisture content, density, MOE, and MOR, while various of layers were a significant effect on moisture content, density, delamination, MOE, and MOR. The number of layer’s laminated veneer made higher of water content, density, delamination, and MOR.

Keywords: laminated veneer, paraserianthes falcataria, pine, the number of layers, urea formaldehyde

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