Agus Sulistyo Budi
Program S3 Ilmu Kehutanan Universitas Mulawarman

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OPTIMALISASI PEMANFAATAN BAHAN BAKU PADA PT SURYA SATRIA TIMUR CORPORATION DI KALIMANTAN SELATAN Abidin, Zainal; Budi, Agus Sulistyo; Supraptono, Bandi; Budiarso, Edy
Jurnal Hutan Tropis Vol 1, No 1 (2013)
Publisher : Jurnal Hutan Tropis

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Abstract

The purpose of this study is to know about optimizing the use of wood raw material in the manufacture of plywood are approximated by calculating the yield, process capability index which approached from the process at each stage of the manufacturing process units of plywood on PT. SSTC. The results of the calculation of the manufacture of plywood ranged from 58.65% s / d 60.77%. The index in the manufacturing process capability are included in the criteria finir capable (Cp = > 1,33), and able to stringent controls (Cp = 1.00 to 1.33), especially at this stage of the manufacturing process finir finir thickness measures 0.6 mm , 0.65 mm, and 0.8 mm. Similarly to measure thick plywood classified under criteria capable and able to stringent controls, especially the American standard for the size of the plywood thickness 3,2 mm, and 2,7 mm SNI standard. In the manufacture of plywood need for tight control especially in the plywood manufacturing process, either directly or indirectly for labor, raw materials and other materials. Alternative utilization of waste from the manufacturing process of plywood is the raw material for wood based industries and industrial fiber-based secondary carpentry, including pra construction panel factory and industrial chip/pulp mill.
PENGENDALIAN MUTU KAYU LAPIS PADA PT WIJAYA TRI UTAMA PLYWOOD INDUSTRY DI KALIMANTAN SELATAN Abidin, Zainal; Budi, Agus Sulistyo; Supraptono, Bandi; Budiarso, Edy
Jurnal Hutan Tropis Vol 1, No 2 (2013)
Publisher : Jurnal Hutan Tropis

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ABSTRACT. The purpose of this study was to determine the final quality of the resulting plywood is approached through the analysis of the technical defects of plywood and plywood analytical laboratory testing, the results of the study are expected to contribute to further optimize maintain/ improve the quality of the resulting plywood. Of the five species studied plywood thickness (2.4 mm, 2.7 mm, 3.2 mm, 3.7 mm and 5.2 mm), it appears that there are differences in the relative types of defects that occur as well as the percentage. To 2.4 mm thick plywood defect percentage at 6.0%, a thickness of 2.7 mm by 5.4%, a thickness of 3.2 mm by 5.05%, a thickness of 3.7 mm and a thickness of 6.15% 5.2 mm by 5.15%. Broadly speaking technical defects seen quite a lot of plywood that over laps, press marks, stains glue / oil, broken face and core tip less. Laboratory testing of plywood covering the plywood moisture content, bonding strength and formaldehyde emission indicates that the process capability index qualifies as capable. For the calculation of the level of non-conformant only for the bonding strength of having the opportunity to not be able to meet the standards of firmness in the range of relatively small, while for the moisture content of plywood and formaldehyde emissions are negligible chances. Keywords : quality, technical defects, laboratory testing, plywood ABSTRAK.Tujuan penelitian ini adalah untuk mengetahui mutu akhir kayu lapis yang dihasilkan yang didekati melalui analisis cacat teknis kayu lapis dan analisis pengujian laboratoris kayu lapis, hasil penelitian diharapkan dapat berkontribusi untuk lebih mengoptimalkan menjaga/meningkatkan kualitas kayu lapis yang dihasilkan. Dari kelima jenis ketebalan kayu lapis yang diteliti (2,4 mm, 2,7 mm, 3,2 mm, 3,7 mm dan 5,2 mm), terlihat bahwa relatif ada perbedaan jenis cacat yang terjadi serta prosentasenya. Untuk kayu lapis tebal 2,4 mm prosentase cacat sebesar 6,0%, ketebalan 2,7 mm sebesar 5,4%, ketebalan 3,2 mm sebesar 5,05%, ketebalan 3,7 mm sebesar 6,15% dan ketebalan 5,2 mm sebesar 5,15%. Secara garis besar terlihat cacat teknis kayu lapis yang tergolong banyak yaitu over laps, press mark, noda lem/minyak, face pecah dan core ujung kurang. Uji laboratoris kayu lapis yang meliputi kadar air kayu lapis, emisi formaldehida dan keteguhan rekat menunjukkan bahwa indeks kapabilitas proses masuk dalam kriteria mampu. Untuk hasil perhitungan tingkat non konforman hanya untuk keteguhan rekat yang mempunyai peluang untuk tidak dapat memenuhi standar keteguhan dalam kisaran relatif kecil, sedang untuk kadar air kayu lapis dan emisi formaldehida peluangnya dapat diabaikan. Kata Kunci : mutu, cacat teknis, uji laboratoris, kayu lapis
ANALISIS FITOKIMIA EKSTRAK KAYU EBONI (Diospyros celebica Bakh.) Ariyanti, Ariyanti; Budiarso, Edi; Budi, Agus Sulistyo; Kusuma, Irawan W.
Jurnal Warta Rimba Vol 4, No 2 (2016)
Publisher : Universitas Tadulako

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Abstract

The purpose of this study was to determine the resistant-termite activity through phytochemical analysis with color test methods and compounds from the extracts of ebony. The results of this study are expected to provide early information about the biological activity of extracts of ebony as a natural anti-termite and the possibility of its utilization as a natural preservative in wood preservation. Ebony (Diospyros celebica Bakh.) have a 1th durable class and 1th strong class. Ebony is the endemic species in Central Sulawesi. The methods of maceration ebony powder, extract ethanol, extraction and fractionation and phytochemical analysis through tests of alkoloid, flavonoid, terpenoid, tannin,  saponin, steroid, carotenoid and  cumarin were applied in this research. The results showed that the extract of ebony contains alkaloids in acetone, n-hexane, ethyl acetate, acetone and methanol. Flavonoid compound was found only in the solvent n - hexane. Tannin compound only on the solvent of ethyl acetate. Saponin compound contained in the acetone and methanol solvents. Steroid compound contained in the acetone and methanol solvents. Carotenoid compound is unfound in all solvents. Carbohydrate compound found only in ethanol. Terpenoids compound found in the acetone and methanol solvents. Cumarin compound contained only in n - hexane.Key words : anti termite, extractive, eboni wood, phytochemical analysis.
Serat Eksentrik pada Kulit Kayu Marobamban Eccentric Fiber in the Bark of Marobamban Budi, Agus Sulistyo; Husein, Nani
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 4, No 2 (2006): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Jurnal Ilmu dan Teknologi Kayu Tropis

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Abstract

Type and dimension of cell, especially fiber and tracheid, generally is used as a standard of utilization and quality of product. Beside type and the presence of fiber, up to now unusual fiber dimension in the bark of Marobamban (Helicia spp.), is not yet discovered. Traditionally, this swamp species is planted merely for protecting land from erosion, but the other part of the trunk like bark and its fibers are not yet utilized. The aim of this research is to know the anatomical structure of Marobamban bark and the presence of unusual fiber dimension as well as the fiber class quality. This research was conducted in Wood Anatomy and Identification Laboratory Forestry Faculty, Mulawarman University for one month. IAWA (International Association of Wood Anatomist) is used as observation and analysis standard. The result shows that outer bark with grey white coloured has thorny fiber along the surface and hooks to each other. Fiber length is classified as short category with big diameter. Fiber lumina and wall thickness are classified to moderate and very thick  walled respectively. Fiber quality is classified to the third class.
PENGARUH PEREKAT TERLABUR DAN KADAR EKSTENDER TERHADAP KETEGUHAN DAN DAYA TAHAN REKAT KAYU LAPIS KAPUR (Dryobalanops spp) Hutomo, Agung Priyo; Budi, Agus Sulistyo; Mailani, Titin
ULIN: Jurnal Hutan Tropis Vol 1, No 1 (2017): -
Publisher : Fakultas Kehutanan Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32522/u-jht.v1i1.811

Abstract

Tujuan penelitian ini adalah untuk mengetahui pengaruh perekat terlabur dan kadar ekstender terhadap keteguhan dan daya tahan rekat kayu lapis kapur (dryobalanops spp).Penelitian ini dilaksanakan di PT. Segara Timber co. Ltd Mangkujenang Samarinda. Perekat terlabur yang digunakan adalah 28g/ft2, 30g/ft2 dan 32g/ft2, sedang kadar ekstender yang digunakan adalah 13,75%, 15,75% dan 17,75% bagian perekat. Data yang diperoleh diolah dengan percobaan faktorial acak lengkap.Hasil penelitian keteguhan rekat baik pada kodisi normal maupun kondisi basah menunjukkan perekat terlabur dan kadar ekstender memberikan pengaruh yang sangat signifikan sedang interaksinya tidak memberikan pengaruh yang signifikan.Penggunaan perekat terlabur sampai batas 30g/ft2 akan meningkatkan keteguhan rekat selebihnya akan menurun, sedangkan semakin besar kadar ekstender yang digunakan dalam pada penelitian ini semakin rendah keteguhan rekatnya.Nilai keteguhan rekat dan kerusakan kayu serta daya tahan rekat (delaminasi) pada semua contoh uji memenuhi standar JAS (1973). Pada uji daya tahan perekat tidak terjadi pengelupasan (delaminasi = 0%)?