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paribotro sutigno
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PENGARUH KOMPOSISI PEREKAT TERHADAP EMISI FORMALDEHIDA DAN KETEGUHAN REKAT KAYU LAPIS paribotro sutigno; suwardi sumadiwangsa
Jurnal Penelitian Hasil Hutan Vol 2, No 2 (1985): 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.1985.2.2.20-25

Abstract

One of  the drawbacks using plywood bonded with urea formaldehvde ( UF) is formaldehyde emission, especially in a room with limited ventilation such as mobile homes. Some countries have imposed restriction on the  limit of formaldehyde emission for certain uses.This work deals with the effect of  hardener and extender types on formaldehyde emission and on bonding strength of  the UF bonded plywood.The effect of  hardener mixed with catching agent on formaldehyde emission is positive,  i.e.   lower the formaldehyde emission at the same time lower the bonding strength.   The effect of extender types were not significant.  The interaction between hardener types and extender types were highly significant. This effect, however,  was not consistent since its effect on the bonding strength was highly significant in one type of hardener only.
KAYU KELAPA SEBAGAI BAHAN INTI PAPAN BLOK Suwandi Kliwon; Paribotro Sutigno; M I lskandar
Jurnal Penelitian Hasil Hutan Vol 3, No 3 (1986): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (11062.377 KB) | DOI: 10.20886/jphh.1986.3.3.1-6

Abstract

This report  deals  with  the  making  of  blackboard   with  coconut   wood  core and  testing  the physical  and  mechanical  properties   of  the blackboard.   The coconut  wood (Cocos nucifera)  was collected from   Banten,  (West  Java).The results, indicate that the physical properties  of blockboard  with coconut  wood core are worse than that with a mixture  of red meranti and coconut  wood core. The bending strength  paralel  to the grain of blockboard  with coconut  wood core is better  than that   with a mixture  of coconut  wood and meranti  wood,  while the properties  perpendicular  to the grain do not show  significant  difference.Only  the glue shear strength  of  blockboard   type  II  with a mixture  of  coconut  wood  and  red meranti  wood  core is in compliance  with Indonesian  and Japanesse  (JAS)  standars.
SIFAT VENIR DAN KAYU LAPIS BEBERAPA JENIS KAYU INDONESIA Suwandi Kliwon; M I Iskandar; Paribotro Sutigno
Jurnal Penelitian Hasil Hutan Vol 3, No 4 (1986): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (13552.353 KB) | DOI: 10.20886/jphh.1986.3.4.1-8

Abstract

This report  deals with peeling,  physical  and  mechanical properties  of  veneer and some physicai   and  mechanical properties  of  plywood (triply)  of  16 wood species from  East  Kalimantan  and  1 species from   West  Java.  The logs  of  all wood species tested could  be peeled  without heating or steaming.   Veneer of 0.9 mm  and 1.5 mm  in thickness  could be peeled  at cutting  angles between  89° and 92°.The yield  of green veneer was 46. 7%  and the average shrinkage  was 10. 7%  with a minimum   of  5.9% (jabon) and  maximum   of  13.9%  (merembung).   Thickness  swelling from  oven dry to air dry varied between 2. 7%  (medang tanduk)  and 3.9%(nyatoh)  with an average of 3.4%.The bonding strength  of plywood  made  of 5 wood species (29. 4%) was in complience  with the Indonesian  standard for  type  II  or water resistant,  11 wood species (64. 7%) with  Japanese  standard  and  6 species (35.3%) with German standard.The average thickness reduction  due to pressing  pressure  was 0.23 mm  with minimum  of 0. 07 mm (buah sayap)  and  maximum  of 0.44 mm (merant imerah).The specific gravity  of  wood used in this experiment  varied between 0.30  (merembung)  and 0. 80 (kapur).  The specific gravity  of plywood ranged from   0.46 (jabon) to 0.89 (medang tanduk).The  average values of  bending  strength  parallel  and perpendicular  to grain of  3 mm  triply  were 1221.29 kg/cm2   and  603.68 kg/cm2, respectively.  The tensile strength parallel and perpendicular  to grain were 625.95 kg/cm2  and 539.93 kg/cm2,  respectively.  The average values for bending strength parallel and perpendicular  to grain of 4 mm triply were  1096.31 kg/cm2  and 398.8 kg/cm2,   respectively.  The tensile  strengths parallel and perpendicular  to grain were 696.46 kg!/cm2  and 443.95 kg/cm2, and 443.95 kg/cm2.   respectively.
PENGARUH KOMPOSISI PEREKAT TERHADAP EMISI FORMALDEHIDA DAN SIFAT FISIS-MEKANIS PAPAN PARTIKEL Paribotro Sutigno; Suwardi Sumadiwangsa
Jurnal Penelitian Hasil Hutan Vol 3, No 2 (1986): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (14736.143 KB) | DOI: 10.20886/jphh.1986.3.2.1-8

Abstract

One  of  the  drawbacks   of  using particleboard   bonded  with  urea formaldehyde  (UF)  is the  formaldehyde  emission, especially  in a room  with  limited  ventilation.  Some  countries  have imposed  restriction  of allowable  emission  for certain  uses.This  work  deals  with  the  study   on  the  effect   of  the  use of  variety  of  hardeners  types  and percentages   of  melamin formaldehyde (MF) as fortifier   on formaldehyde    emission.   The experiment   reveals that  the effect  of hardener  mixed  with catching  agent  and the effect  of fortifier on formaldehyde   emission  was effective   to curb  down  the formaldehyde   emission.The effect  of fortifier   on some physical  and mechanical properties   was observed.  It decreases water absorption  and thickness swelling,  increases shear strength;  internal  bond  strength,   and  the  modulus  of rupture,   but  did  not  affect  the modulus  of elasticity.The effect  of hardener  mixed  with  catching  agent on modulus  of  elasticity  was not significant,  while on other  particle- board properties   the  effect   was not  consistent.
SIFAT PAPAN BLOK DARI LIMBAH EKSPLOITASI Suwandi Kliwon; Paribotro Sutigno; M I Iskandar
Jurnal Penelitian Hasil Hutan Vol 3, No 3 (1986): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (3057.271 KB) | DOI: 10.20886/jphh.1986.3.3.28 - 33

Abstract

A study on the physical and mechanical properties of block-board using core strip from 4 species of loging wastes has been undertaken and the results presented in this paper. The result shows that the everage value of block-board moisture content, density and strip density are 9.85%; 0.47 % and 0.43% respecttively. The bending strength of the block-board varies from 457.41 kg/cm2 (Jelutung) and 465.22 kg/cm2 (Perupuk) for paralel to the grain of the face and back veneer. The bending strength perpendicular to the grain of the outer veneer varies from 219. 76 kg/cm2 (Jelutung) and 418.85 kg/cm2 (Perupuk). The block-board samples which uses core strips from the 4 wood species have glue shear strength properties which complies with the Indonesian, German and Japanesse (JAS) standard, while the delamination complies only with Japanesse (JAS) standard.  
PENGARUH KOMPOSISI PEREKAT TERHADAP EMISI FORMALDEHIDA DAN KETEGUHAN REKAT KAYU LAPIS paribotro sutigno; suwardi sumadiwangsa
Jurnal Penelitian Hasil Hutan Vol 2, No 2 (1985): 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.1985.2.2.20-25

Abstract

One of  the drawbacks using plywood bonded with urea formaldehvde ( UF) is formaldehyde emission, especially in a room with limited ventilation such as mobile homes. Some countries have imposed restriction on the  limit of formaldehyde emission for certain uses.This work deals with the effect of  hardener and extender types on formaldehyde emission and on bonding strength of  the UF bonded plywood.The effect of  hardener mixed with catching agent on formaldehyde emission is positive,  i.e.   lower the formaldehyde emission at the same time lower the bonding strength.   The effect of extender types were not significant.  The interaction between hardener types and extender types were highly significant. This effect, however,  was not consistent since its effect on the bonding strength was highly significant in one type of hardener only.
KAYU KELAPA SEBAGAI BAHAN INTI PAPAN BLOK Suwandi Kliwon; Paribotro Sutigno; M I lskandar
Jurnal Penelitian Hasil Hutan Vol 3, No 3 (1986): 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.1986.3.3.1-6

Abstract

This report  deals  with  the  making  of  blackboard   with  coconut   wood  core and  testing  the physical  and  mechanical  properties   of  the blackboard.   The coconut  wood (Cocos nucifera)  was collected from   Banten,  (West  Java).The results, indicate that the physical properties  of blockboard  with coconut  wood core are worse than that with a mixture  of red meranti and coconut  wood core. The bending strength  paralel  to the grain of blockboard  with coconut  wood core is better  than that   with a mixture  of coconut  wood and meranti  wood,  while the properties  perpendicular  to the grain do not show  significant  difference.Only  the glue shear strength  of  blockboard   type  II  with a mixture  of  coconut  wood  and  red meranti  wood  core is in compliance  with Indonesian  and Japanesse  (JAS)  standars.
SIFAT VENIR DAN KAYU LAPIS BEBERAPA JENIS KAYU INDONESIA Suwandi Kliwon; M I Iskandar; Paribotro Sutigno
Jurnal Penelitian Hasil Hutan Vol 3, No 4 (1986): 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.1986.3.4.1-8

Abstract

This report  deals with peeling,  physical  and  mechanical properties  of  veneer and some physicai   and  mechanical properties  of  plywood (triply)  of  16 wood species from  East  Kalimantan  and  1 species from   West  Java.  The logs  of  all wood species tested could  be peeled  without heating or steaming.   Veneer of 0.9 mm  and 1.5 mm  in thickness  could be peeled  at cutting  angles between  89° and 92°.The yield  of green veneer was 46. 7%  and the average shrinkage  was 10. 7%  with a minimum   of  5.9% (jabon) and  maximum   of  13.9%  (merembung).   Thickness  swelling from  oven dry to air dry varied between 2. 7%  (medang tanduk)  and 3.9%(nyatoh)  with an average of 3.4%.The bonding strength  of plywood  made  of 5 wood species (29. 4%) was in complience  with the Indonesian  standard for  type  II  or water resistant,  11 wood species (64. 7%) with  Japanese  standard  and  6 species (35.3%) with German standard.The average thickness reduction  due to pressing  pressure  was 0.23 mm  with minimum  of 0. 07 mm (buah sayap)  and  maximum  of 0.44 mm (merant imerah).The specific gravity  of  wood used in this experiment  varied between 0.30  (merembung)  and 0. 80 (kapur).  The specific gravity  of plywood ranged from   0.46 (jabon) to 0.89 (medang tanduk).The  average values of  bending  strength  parallel  and perpendicular  to grain of  3 mm  triply  were 1221.29 kg/cm2   and  603.68 kg/cm2, respectively.  The tensile strength parallel and perpendicular  to grain were 625.95 kg/cm2  and 539.93 kg/cm2,  respectively.  The average values for bending strength parallel and perpendicular  to grain of 4 mm triply were  1096.31 kg/cm2  and 398.8 kg/cm2,   respectively.  The tensile  strengths parallel and perpendicular  to grain were 696.46 kg!/cm2  and 443.95 kg/cm2, and 443.95 kg/cm2.   respectively.
PENGARUH KOMPOSISI PEREKAT TERHADAP EMISI FORMALDEHIDA DAN SIFAT FISIS-MEKANIS PAPAN PARTIKEL Paribotro Sutigno; Suwardi Sumadiwangsa
Jurnal Penelitian Hasil Hutan Vol 3, No 2 (1986): 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.1986.3.2.1-8

Abstract

One  of  the  drawbacks   of  using particleboard   bonded  with  urea formaldehyde  (UF)  is the  formaldehyde  emission, especially  in a room  with  limited  ventilation.  Some  countries  have imposed  restriction  of allowable  emission  for certain  uses.This  work  deals  with  the  study   on  the  effect   of  the  use of  variety  of  hardeners  types  and percentages   of  melamin formaldehyde (MF) as fortifier   on formaldehyde    emission.   The experiment   reveals that  the effect  of hardener  mixed  with catching  agent  and the effect  of fortifier on formaldehyde   emission  was effective   to curb  down  the formaldehyde   emission.The effect  of fortifier   on some physical  and mechanical properties   was observed.  It decreases water absorption  and thickness swelling,  increases shear strength;  internal  bond  strength,   and  the  modulus  of rupture,   but  did  not  affect  the modulus  of elasticity.The effect  of hardener  mixed  with  catching  agent on modulus  of  elasticity  was not significant,  while on other  particle- board properties   the  effect   was not  consistent.
SIFAT PAPAN BLOK DARI LIMBAH EKSPLOITASI Suwandi Kliwon; Paribotro Sutigno; M I Iskandar
Jurnal Penelitian Hasil Hutan Vol 3, No 3 (1986): 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.1986.3.3.28 - 33

Abstract

A study on the physical and mechanical properties of block-board using core strip from 4 species of loging wastes has been undertaken and the results presented in this paper. The result shows that the everage value of block-board moisture content, density and strip density are 9.85%; 0.47 % and 0.43% respecttively. The bending strength of the block-board varies from 457.41 kg/cm2 (Jelutung) and 465.22 kg/cm2 (Perupuk) for paralel to the grain of the face and back veneer. The bending strength perpendicular to the grain of the outer veneer varies from 219. 76 kg/cm2 (Jelutung) and 418.85 kg/cm2 (Perupuk). The block-board samples which uses core strips from the 4 wood species have glue shear strength properties which complies with the Indonesian, German and Japanesse (JAS) standard, while the delamination complies only with Japanesse (JAS) standard.  
Co-Authors M I Iskandar M I lskandar Suwandi Kliwon suwardi sumadiwangsa