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Suwandi Kliwon
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SIFAT PAPAN PARTIKEL DARI KAYU MANGIUM Suwandi Kliwon
Jurnal Penelitian Hasil Hutan Vol 20, No 3 (2002): Buletin Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.2002.20.3.195-206

Abstract

Ten year old Acacia mangium wood species from Sukabumi area (West Java) was used as the raw material of exterior type particleboard glued with phenol formaldehyde.Single layered particleboard with density target of 0.5 - 0. 70 g/cm3 with its nominal thickness of 1.50 cm. The dimension of particleboard was 30 cm x 30 cm x 1.50 cm. The treatment of wood particle were three kinds i.e. unsoaked, soaked for 24 hours and 48 hours in cold water. The objective of the study was to determine the effect of treatments on the physical and mechanical properties of particleboard. The result indicated that the modulus of rupture (MOR), air dry internal bond, the thickness swelling after soaked during 2 hours and 24 hours in cold water, 3 hours after soaked in boiling water and 3 hours soaked in boiling water and dried (absolute dry), moisture content and density of mangium particleboard met the Indonesian National Standard for particleboard. The treatment of wood particle soaked in cold water is not recommended.
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 | 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.
PENGARUH JENIS KAYU DAN KOMPOSISI PEREKAT UREA FORMALDEHIDATERHADAP KETEGUHAN REKAT KAYU LAPIS BEBERAPA JENIS KAYU HUTAN TANAMAN INDUSTRI Suwandi Kliwon; M I lskandar; Paribroto Sutigno
Jurnal Penelitian Hasil Hutan Vol 5, No 4 (1988): 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.1988.5.4.226-232

Abstract

A glue shear test  was conducted   using plywood panel,  made  from  three  wood  species  namely pine  (Pinus merkusii Yung  et de  Vr.),  Eucalyptus alba and Eucalyptus deglupta from  West Java.  The bolts were rotary peeled  into  veneer of  1.5 mm  thick.The  veneer  sheets  were glue  with  urea formaldehyde   resin in combination with  meranti  and kapur  veneers.  Each plywood  sample  thus consisted  of three layer veneer and meranti  merah (red meranti)  and kapur (Dryobalanops  oramatica Gaert) as face and  back  veneers.The  bonding  strength  (glue shear strength)   of  each plywood  type  were then  tested according  to the Indonesian  and Japaneess  standard. The  result  indicates  that  there  were  significant differences between wood  species  and  variation  of extender   composition    according   to  the  Indonesian standard and  only  percentage   of  extenders  indicated significant difference   using Japaneess standard.  Percentage  10%  extender   was the  best bonding  strength  of plywood  comprising  with the  others.
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 | 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.
PENGARUH PENGAWETAN VENIR DENGAN SENYAWA BFCA TERHADAP KETEGUHAN REKAT KAYU LAPIS DARI KAYU KARET (Hevea brasiliensis) Suwandi Kliwon; M I lskandar; Paribotro Sugitno
Jurnal Penelitian Hasil Hutan Vol 10, No 3 (1992): 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.1992.10.3.97 -101

Abstract

This paper   describes  the  treatment  of  1.5  mm   x  20  cm x  20 cm rubberwood  veneer  with BFCA compound of   5 %,  10%.   15 %, 20 %  and  control,  and  3  variations of  extender  in urea  formaldehyde   glue  ,    compositionic    10%, 20% and 30%.The  results  reveal   that  the   concentration of  BFCA  influences    the  bonding   strength  of  rubberwood plywood using Indonesian standard. On the  other  hand  the  effect of percentage   of  extender in  tne compostion  of  urea  formal dehyde   glue  is  not  significant on the bonding strength using Indonesian and Japanese standard. But  the interaction. of concentration of BFCA and percentage  of  extender influences  the bonding strength of plywood. 
EMISI GAS FORMALDEHIDA DARI BEBERAPA TINGKAT KETEBALAN KAYU LAPIS Suwandi Kliwon
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 | DOI: 10.20886/jphh.1988.5.3.128-130

Abstract

In  this paper  the  determination    of  formaldehyde    gas emission   from  plywood  is presented.   Six  samples  were colected  from  several plywood  factories   in Indonesia  two  samples  were made  by  the center   for  Forest  Products  Research and Development   Laboratory  in Bogor.The  results showed  that  the amount   of  formaldehyde   gas emission  from  plywood  varies from  3.080  ppm  (3.6 mm thick) to  9.933 ppm (for 18.0  mm thick)
PENGARUH JENIS KAYU DAN KOMPOSISI PEREKAT TAHAN CUACA TERHADAP SIFAT PAPAN PARTIKEL DUA JENIS KAYU HUTAN TANAMAN INDUSTRI Suwandi Kliwon; M I lskandar; Paribotro Sutigno 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 | DOI: 10.20886/jphh.1988.5.3.131-135

Abstract

This  paper  deals  with  an experiment   on  the effect of  two  timber  estate  wood  species  i.e. jeungjing  (Albizia.falcataria  Back),  tusam  (Pinus  merkusii Yung  et de  Vries)  and  the  composition   of  weather  resistance  resin  (phenol  formaldehyde)  on the properties  of particle  board.All  wood  samples  were obtained  from  West Java.  The sample  cut  into 2 x 2 cm, 4 x 4 cm and 6 x 6 cm with 5 mm thick, respectively. Wood particles were glued with phenol   formaldehyde resin. Particle  board  were  made  with  3 glue composition  ( 10%, 12%  and  14%)   based on dry  weight of wood particle  and 3 wood particle  dimension   (0.5  mm  x 20 mm x 20 mm,  0.5 mm x 40 mm x 40 mm  and 0.5 mm x 60 mm  x 60 mm).The properties  of particle  board  were  tested  with  Indonesia  Industry  Standard  (SIl.  0797­83).The  result  indicated that:  The physical  and  mechanical  properties  generally  met  Indonesian  Standard.  Analysis  of variance  for  internal    bond,   shear  strength  and  bending  strength  were significant  different on  wood  species, particle  size and  the portion of  phenol   formaldehyde liquid  resin. The  portion of  14%   phenol   formaldehyde  liquid  resin  based on the  dry  wood  particle,   its physical   and  mechanical   properties   were  best,   compared   with  others portion   of phenol   formaldehyde  liquid resin (10%  and 12%).
CAMPURAN SAGU DAN ILES-ILES SEBAGAI EKSTENDER PEREKAT UREA FORMALDEHIDA KAYU LAPIS Suwardi Sumadiwangsa; Yusuf Sudo Hadi; Jhon Novarly Simanjuntak; Suwandi Kliwon
Jurnal Penelitian Hasil Hutan Vol 4, No 3 (1987): 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.1987.4.3.30-35

Abstract

In 1984 Indonesia required more than 64.000 ton of wheat flour for  extender  of urea formaldehyda   (UF) adhesive in plywood  industry.  It is considered more economical  when the wheat flour  can be substituted  by locally available carbohydrate  such as sago (Metroxylon  sp.). However, sago alone gives poor quality  as an extender  of  UF adhesive.Iles-iles (Amorphophallus oncophyllus)  is another potential source of carbohydrate.   This contains  more protein  and mannan  than that  of wheat flour. Therefore, it is deemed necessary to explore the posisibility  of mixing sago and iles-iles as a combined  substitute  for  wheat flour  as extender  of  UF adhesive.This work is intended to obtain optimal ratio of sago and iles-iles formulation,   and then to compare its performance  with that of wheat flour extender.  This study comprise of 5 levels of sago and iles-iles mixed and 3 levels of flour  extender, each of which were having 5 replicates aplied for plywood  adhesion.The 713 ratio of sago and iles-iles is the same as, if not better than, wheat flour  extender.  The extender content  (X) and plywood  bonding strength (Y) for  each of  the extender  was linearly correlated.  It is interesting to note  that  the 614 ratio gives  very small slope (B) in its linear regression, in contrast  to the others.Although  the price of iles-iles was comparable to the wheat flour's, the lles-iles gives higher bonding strength  at lower proportion  compared with that of  the wheat flour  extender. 
Co-Authors Jhon Novarly Simanjuntak M I Iskandar M I Jslrandar M I lskandar Paribntro Sutigno Paribotro Sugitno Paribotro Sutigno Paribotro Sutigno Sutigno Paribroto Sutigno Rozak Memed Suwardi Sumadiwangsa Yusuf Sudo Hadi