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Search results for , issue "Vol 13, No 8 (1995): Jurnal Penelitian Hasil Hutan" : 4 Documents clear
KAJIAN BIAYA PRODUKSI, HARGA POKOK DAN BATAS KEUNTUNGAN PADA PENGOLAHAN PRODUK BERSAMA PENGERJAAN KAYU lrawati, Setiasih; Sulastiningsih, l M; Sutigno, Paribotro
Jurnal Penelitian Hasil Hutan Vol 13, No 8 (1995): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2869.926 KB) | DOI: 10.20886/jphh.1995.13.8.314-325

Abstract

The study on production  cost,  base price  and profit  margin was conducted in wood  working  industry  using  sawn  timber  of perupuk  (Lophopetalum spp.), meranti (Shorea spp.),   damar (Agathis  spp.)  and jangkang  (Xylopia spp.) for various joint  products. The products  were moulding, S4S. Solid  jointed  board, finger jointed board,  finger jointed stick and door jamb. There were five products of perupuk,  two of meranti, two of'jangkang and one of damar.The results of tire  study showed that  the method of joint  cost calculation used  by  the  mill was  average  cost per  unit method. Production  costs  of  jangkang  and damar  wood  working products  were higher  than  those  of  meranti  and perupuk.  The average  proponion  of  raw materials, wages and others on the total production cost was respectively 62%, 4/% and 34%. Proportion  of wage cost was small,  on the contrary, proportion of other production cost was relatively high. Among ten kinds of wood working joint products,  only three yielded  a positive profit margin,  namely,  moulding,  S4S and finger jointed board of perupuk.Based on the average cost per unit method the raw material cost, production cost and base price of S4S were lower than those of finger jointed stick. This results was irrational since the raw  material  cost  of  S4S  should   be  more  expensive  than  that  of finger jointed  stick. Consequently,  the average cost per unit method was not suitable for joint  cost  distributing method of  wood working joint  products.   Therefore.  it is suggested for replacing this method with one that considers quality and price of raw material and the product selling price.
APLIKASI METODE BOUCHERI UNTUK MENGAWETKAN BAMBU SEGAR Permadi, Pipin; Sumarni, Ginuk
Jurnal Penelitian Hasil Hutan Vol 13, No 8 (1995): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (891.739 KB) | DOI: 10.20886/jphh.1995.13.8.307-313

Abstract

This paper deals with reseach results on bamboo preservation using boucherie method. Two bamboo species,  namely andong (Gigantocloa verticillta Munro) and tali  (Gigantochloa apus Kurtz) were treated freshly using Borax (Na2B4O7. IOH2O)  solution with strenght solution of 5% as preservative. One of butt of the 8 length bamboo was immersed 10 cm in borax solution for 2. 4. 6, 8.  and  10  days and  the penetration of preservative were observed. The results showed  that  the  penetration  of  preservative  in  andong  bamboo for 2. 5, 6,  8,  and 10 consecutively  were 131,40 cm, 304,92 cm, 308.42 cm, 469,88  and 315,28 cm, while  in tali, bamboo  were 68,30 cm,  116.83   cm, 141,88 cm  and 128,17 cm,  respectively.  Maximum pnetration of preservative was achived in 8 days immersion for andong and 6 days tali.
PENINGKATAN KUALITAS KEMENYAN DENGAN MENGGUNAKAN PELARUT ORGANIK Wiyono, Bambang
Jurnal Penelitian Hasil Hutan Vol 13, No 8 (1995): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1352.93 KB) | DOI: 10.20886/jphh.1995.13.8.300-306

Abstract

This experiment is intended to improve the quality of the several types of benzoin by using an aceton solvent. The benzoin consisted of four samples with decreasing order of  quality: "mata kasar",   "mata halus", "jurur" and "abu". All of  these  samples  were obtained from Tarutung North Sumatera. A general linear models procedure in the SAS computer package was employed to analyze the effect of the acetone solvent extraction and benzoin quality on physico chemical properties of benzoin.Results showed that the acetone solvent extraction. type of benzoin and the interaction of both gave a highly significant effect on moisture contens. Softening points, number of saponifications, solubility in ethanol. ash contents.  benzoin acid, calculated as cinnamic acids; except the effect of interaction  on softening  points. Furthermore,  the LSD analysis between means indicated that there were significant  differences  on physico  - chemical properties  among the type of benzoin, exclude the means value of solubility in alcohol between "mata kasar" and "mata halus".  and between "jurur" and "abu". There was also no significant difference on an ash content means value between "mata kasar" and "mata halus".  This aceton solvent extraction increased tire quality of "mata kasar" and "mata halus" benzoin to meet the first and tire second quality requirement of the Indonesian National Standard.  respectively. However,  the softening point of jurur benzoin did not meet second quality requirement of this standard. Overall,  the aceton solvent extraction can improve the quality of benzoin as indicated by an increase  in benzoin value, calculated as cinnamic acids, and a decrease in dirt content value.
PENGARUH JENIS ISOLAT LIGNIN DAN NISBAH MOL L/F PADA PEREKAT LIGNIN FORMALDEHIDA TERHADAP KETEGUHAN REKAT KAYU LAPIS TUSAM * Santoso, Adi; Ruhendi, Surdiding; Achmadi, Suminar S; Suhendang, Endang
Jurnal Penelitian Hasil Hutan Vol 13, No 8 (1995): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.1995.13.8.293-299

Abstract

It has been known that lignin can be used as plywood adhesive for exterior purpose. The sources of lignin are black liquor indulin-AT (commercial lignin).A study on lignin formaldehyde  resin making from  black liquor and indulin-AT was done and the results were  used to predict  the effect of lignin  isolate type and L/F  mole ratio on plywood bonding strength. The results show taht the type of lignin isolate and L/F  mole ratio have highly significant  effect on plywood bonding strength. The mole ratio L/F of 1 : 1.50 and 1:1.75 by lignin isolate from  indulin-AT result in plywood bonding strength about 7.5 kg/cm2 and 8.8 kg/cm2,   respectively. The bonding strength of these plywood conforms with the 1983 Japanese standard for exterior purpose.                       

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