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M I Iskandar
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SIFAT VENIR DAN KAYU LAPIS SEMBILAN JENIS KAYU BERASAL DARI KALIMANTAN BARAT DAN JAWA BARAT Suwandi Kliwon; M I Iskandar; Paribotro Sutigno
Jurnal Penelitian Hasil Hutan Vol 9, No 7 (1991): 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.1991.9.7.268-273

Abstract

This paper presents study   result on the log peeling properties  and the glueing,  physical and mechanical properties of the veneer and plywood  made from nine wood species are described in this paper. The result shows that all of the, logs could be peeled in cold condition. The average veneer shrinkage from green to oven dry moisture content was 7.00 % and veneer swelling from oven dry to air dry  condition the average value was 3.39 %. The average thickness reduction due to pressing in plywood manufacturing was  3. 78 mm. The  bonging strength of plywood  from 8  wood species (89 %)  conforms  with the Indonesian standard  for  type  II, 9 wood species  (100 %)   with Japanese standard and 9 wood species (100 %)  with German standard.  The average specific gravity  of multiplex  was 0.61 while the average specific gravity of trplex was  0.60. Bending strength. tensile strength and compression  strength parallel to grain of triplex are higher  than multiplex.
PRODUKTIVITAS DAN BIAYA PRODUKSI SERPIH KAYU MENGGUNAKAN MESIN SERPIH MUDAH DIPINDAHKAN (SMD): Studi Kasus di BKPH Parungpanjang, Bogor Achmad Supriadi; Osly Rachman; M I Iskandar
Jurnal Penelitian Hasil Hutan Vol 24, No 2 (2006): 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.2006.24.2.103-115

Abstract

Hasil pemanenan kayu di areal hutan baik hutan alam maupun hutan tanaman masih menyisakan potongan-potongan kayu kecil. Potongan kayu yang biasa disebut sebagai limbah pemanenan pada umumnya ditinggalkan di hutan dan sebagian yang dianggap masih laik dijual kepada penduduk sekitar hutan untuk dimanfaatkan sebagai kayu bakar atau bahan baku energi lainnyaDalam rangka meningkatkan pemanfaatan limbah kayu dari hasil pemanenan hutan tanaman, telah dilakukan penelitian pengolahan limbah kayu jenis mangium (Accacia mangium) di areal hutan tanaman di BKPH Parungpanjang, Bogor. Hasil penelitian menunjukkan bahwa faktor konversi rarta- rata limbah pemanenan untuk bahan baku serpih (chip) adalah 1 sm = 0,4791 m3   = 0,257 ton. Rendemen serpih sebelum disaring dan setelah disaring masing-masing adalah 97% dan 53%. Produktivitas penyerpihan adalah 1,6 ton/hari. Investasi pendirian satu unit pengolahan serpih kayu sebesar Rp 38.000.000. Biaya produksi per tahun sebesar Rp 156.109.113  dan harga pokok produksi serpih sebesar Rp 325.227 per ton serpih. Dengan harga jual serpih Rp 360.000 per ton, dapat diperoleh laba kotor dan laba bersih rata-rata per tahun masing-masing sebesar Rp 16.691.040 dan Rp 14.187.784.
SIFAT PAPAN BLOK DENGAN INTI LIMBAH EKSPLOITASI HUTAN LAMPUNG Suwandi Kliwon; M I Iskandar; Paribotro Sutigno
Jurnal Penelitian Hasil Hutan Vol 4, No 2 (1987): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (3182.628 KB) | DOI: 10.20886/jphh.1987.4.2.16-20

Abstract

Blockboards   of six wood species of  logging  waste from  Lampung as core strip material were manufactured in the laboratory, and  their physical  and mechanical properties were tested.The average value of  moisture  content, board density  and strip  density  were 10.09%, 0.63  g/cm3  and 0.49  g/cm3, respectively.  Bending strength parallel to the grain varied between  690.47 kg/cm2  (red meranti)  and 1041.99 kg/cm2 (keruing).  The bending strength  perpendicular   to the grain varied between 112.40 kglcm2 (Bima) and 319.90 kg/cm2 (Pulai), and bending strength parallel to the grain were significantly affected by wood species, but bending strength  perpendicular to the grain  were not. 
SIFAT VENIR DAN KAYU LAPIS 7 JENIS KAYU DARI MALUKU M I Iskandar; Suwandi Kliwon; Paribotro Sutigno
Jurnal Penelitian Hasil Hutan Vol 4, No 2 (1987): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (3736.451 KB) | DOI: 10.20886/jphh.1987.4.2.36-41

Abstract

 The characteristics studied  are peeling properties,  physical  properties  of  the veneer, gluing properties  and some physical  and  mechanical properties  of  the plywood   (both  triplex and multiplex).All logs from the 7 wood species could be peeled satisfactorily  in cold condition.   Veneer of  0.9 mm and 1.5  mm thickness  could be produced at a cutting  angle between  91°-93°.Average shrinkage  of  the veneer is 7%.  Average swelling from oven dry condition  is 3%.Water resistant,  bonding  strength  for all wood  species studied  meet Indonesian,   Japanese  and German standards. Average thickness reduction due to pressing in the plywood   manufacturing  process  is 0.15 mm.Specific  gravity  of  the plywood   is about  6 percent  higher than that  of  the wood from   which it is made  of
SIFAT VENIR DAN KAYU LAPIS ENAM JENIS KAYU DARI IRIAN JAYA M I Iskandar; Suwandi Kliwon; Paribntro Sutigno
Jurnal Penelitian Hasil Hutan Vol 6, No 2 (1989): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (4704.941 KB) | DOI: 10.20886/jphh.1989.6.2.83 - 89

Abstract

A  study   result on  the  suitability  of  wood  species  from  Irian Jaya as raw material for veneer and plywood  is reported  in this paper.  This  study   consisted  log  peeling  characteristic,  veneer  property,  some physical  and mechanical properties of  plywood   (triplex  and multiplex).All  of  the  logs from  6 wood  species  could  be peeled  in cold  condition, producing 1.5   mm veneer at a cutting  angle between   920-92°30-The  average shrinkage  of  veneer  is  7.99%,    with  a  minimum of  6. 74% (sehiega) and  maximum   of  9. 71 %  (petuon).  Veneer  swelling from oven-dry  to air-dry  condition varied between   2. 68% (katulampa)  and 4.01 % (petuon)  with  an   average  of 3.19%.The  bonding  strength  of plywood   for  type  11  from  6 wood  species  (100%)  conform's  with  the Indonesian  Standard6 wood species  (100%)  with Japanese Standard  and 6 species  (100%)  with German Standard.The specific  gravity  of   multiplex    is  higher  than  triplex.  Some  mechanical  properties of  multiplex are higher  than triplex
SIFAT VENIR DAN KAYU LAPIS LIMA JENIS KAYU HUTAN TANAMAN INDUSTRI Memed Rozak; M I Iskandar; Paribotro Sutigno
Jurnal Penelitian Hasil Hutan Vol 5, No 3 (1988): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (4222.489 KB) | DOI: 10.20886/jphh.1988.5.3.143-147

Abstract

Five  Indonesian wood species were investigated for their veneer  and plywood properties.    These species  include are  meranti merah  (Shorea  stenoptera  Burck.),   akasia (Acacia magnium  Willd.),  ampupu T (Eucalyptus urophylla), ampupu  A (Eucalyptus  urophylla) and ekaliptus  (Eucalvptus platiphvlla F.v.M).                    .                                                                             Four  wood species were peeled  in cold condition.  Only ekaliptus  was found  unsuitable  for peelling due  to high density and  the  interwoven nature  of  the fibers. Veneer  of 1.5 mm  thickness could be produced satistactorily at a cutting angle between 90o­92°.                                                                                                                                                                                                    Average  shrinkage of  the  veneer  is  8.28%.  Average swelling  from oven dry  condition  to completely saturabed is 3.76%. Water resistance bonding  strength  for all wood  species studied  was m conformity   with the  Indonesian,  Japanese, and German standards.  Average thickness  reduction  due to pressing  pressure during plywood   making is  0,24 mm.               .Average  specific  gravity of  the plywood  appeared  to  0.048 be percent higher  than  that  of  the  wood  from  which they  are made of.
SIFAT KAYU LAPIS PINUS DENGAN BEBERAPA MACAM KETEBALAN Suwandi Kliwon; M I Iskandar; Paribotro Sutigno
Jurnal Penelitian Hasil Hutan Vol 5, No 3 (1988): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (4821.811 KB) | DOI: 10.20886/jphh.1988.5.3.157-161

Abstract

Experimental plywood  panels   were  made  from   bolts  of  tapped  and  untapped Pinus  merkusii  trees  obtained   from East Java.  The  bolts  were rotary peeled   into  veneers  of  1.5   mm,  2.0  mm  and 3.0  mm  thick.  Veneer  of  1.5 mm  was  exclusively   used  as face  veneer  and  others  for  core. Plywood   panels   were  glued  with  urea  formaldehyde resin. Plywood were made  with 5 thickness variation (5.00 mm, 6.00 mm, 7.5 mm, 9.0 mm  and 12.00  mm).                                    The  physical   and  mechanical  properties   of  all panels   were  tested  according   to  the ASTM   standard,  and  bonding strength   of  plywood  was  tested   according  to  Indonesian,   Japanese  (JAS)  and  Germany (DIN)  standards. The  results indicated that  there  is no  significant   difference   in  moisture   content,   density   of  plywood  made  tapped  and  untapped pine   wood.                                                                                                                 Mechanical  properties   of  plywood (bending  strength, tensile  strength   and  compression   strength)   were significant difference   made of tapped  and untapped  pine  wood  also vice versa with  its thickness variation.Bonding  of glue  of plywood  there  is no significant  difference made  tapped  and untapped  pine  wood. Only plywood which tested  its  bonding  strength   using  Germany   standard  indicated  significant  shear strength  of plywood  with  thick­ ness 5.00 mm  is better  than that  of  the 6.00  mm  thickness.Modulus  of rupture  and compression  strength  of  tapped pine plywood are better than the untapped one.
SIFAT PAPAN BLOK SENGON DENGAN VENIR SILANG KAYU TUSAM M I Iskandar; I M Sulastiningsih
Jurnal Penelitian Hasil Hutan Vol 24, No 2 (2006): 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.2006.24.2.145-155

Abstract

Papan blok (5 lapis) sekala laboratorium dibuat dari kayu sengon (Paraserianthes falcataria) dan kayu tusan (Pinus merkusii) yang direkat dengan perekat urea formaldehida. Venir luar dan bilah inti papan blok terbuat dari kayu sengon sedangkan venir silang terbuat dari kayu tusam. Tebal venir luar 2 mm sedangkan tebal venir silang 3 mm. Ukuran  bilah inti terdiri dari dua dan 3 macam lebar ( 0,7, 2,5 dan 7,6 cm). Sifat papan blok diuji menurut Standar Indonesia (SNI) meliputi kadar air, kerapatan, keteguhan rekat dan delaminasi. Pengujian keteguhan lentur papan blok dilakukan menurut Standar Jerman (DIN) sedangkan pengujian pengembangan dimensi papan blok dilakukan menurut Standar Amerika (ASTM). Tujuan penelitian ini adalah untuk mengetahui pengaruh ukuran bilah inti terhadap sifat papan blok sengon dengan venir silang kayu tusam.Hasil penelitian menunjukkan bahwa kadar air rata-rata papan blok adalah 12% sedangkan kerapatan rata-rata papan blok adalah 0,42 g/cm3. Lebar bilah inti berpengaruh terhadap pengembangan tebal dan pengembangan lebar papan blok. Tebal bilah inti berpengaruh terhadap pengembangan lebar papan blok tetapi tidak berpengaruh terhadap pengembangan tebal dan pengembangan panjang papan blok. Keteguhan rekat papan blok yang diuji berdasarkan uji geser tarik dan uji delaminasi memenuhi persyaratan Standar Indonesia (SNI). Penggunaan venir silang kayu tusam dalam pembuatan papan blok sengon meningkatkan keteguhan lentur sebesar 6,2% pada arah sejajar serat dan 18,6% pada arah tegak lurus serat. Keteguhan lentur sejajar serat papan blok sengon yang dibuat dengan menggunakan venir silang kayu tusam semuanya memenuhi persyaratan Standar Jerman (DIN).
SIFAT VENIR DAN KAYU LAPIS DARI KAYU SENGON DAN KARET PADA BEBERAPA MACAM UMUR M I Iskandar; Suwandi Kliwon; Paribotro Sutigno
Jurnal Penelitian Hasil Hutan Vol 12, No 6 (1994): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1798.894 KB) | DOI: 10.20886/jphh.1994.12.6.195-201

Abstract

The result of the suitability study of two wood species as raw material for veneer and plywood are reported. The wood raw material used rubber wood (Hevea   brasiliensis) and sengon (Paraserianthes    falcataria). The wood used were obtained from  different age classes i.e.10  and 20 years for rubber wood and 10 and 15  years for sengon.  The study  consisted of  log peeling  characteristic, veneer properties and some physical-mechanical properties of plywood (triplex and multiplex).All of the logs from two wood species could be peeled in cold condition, producing 1,5 mm veneer at  a cutting  angle between  89o30'-91o30'.  The average shrinkage of veneer is 4.51% and the average veneer swelling from oven-dry to air dry is 3.30 %.The bonding strength of plywood from  all wood species conform with the Indonesian standard,  German standard and Japanese standard for type 11 or water resistant. The spesific gravity and mechanical properties of plywood from  the older tree tends higher than  that from  the younger tree.
SIFAT VENIR DAN KAYU LAPIS ENAM JENIS KAYU UNTUK HUTAN TANAMAN INDUSTRI Rodjak Memed; M I Iskandar; Paribotro Sutigno
Jurnal Penelitian Hasil Hutan Vol 7, No 4 (1990): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (4666.226 KB) | DOI: 10.20886/jphh.1990.7.4.139 - 145

Abstract

The characteristics studied are peeling  properties, physical properties of  the  veneer,  gluing  properties  and  some physical   and  mechanical  properties of  the  plywood  (both   triplex and  multiplex).All logs from 6 wood species could be peeled satisfactorily in cold condition. Veneer  of  1.5 mm  thickness could be produced at cutting angle  between  90° 30’- 92°.Average shrinkage of  the  veneer is 6.52% and  average veneer  swelling  from  oven  dry to air dry condition is 4.11%. Water resistant bonding  strength for all wood species  studied meet  Indonesian, Japanese and German  standard. Average thichness  reduction  due to pressing in the plywood  manufacturing  process  is 0.31mm.  The mechanical  properties of plywood vary among  the wood  species.
Co-Authors Achmad Supriadi I M Sulastiningsih Memed Rozak osly rachman Paribntro Sutigno Paribotro Sutigno Rodjak Memed Suwandi Kliwon