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All Journal Jurnal Penelitian Hasil Hutan Jurnal Penelitian Hasil Hutan

Suwandi Kliwon

Pusat Penelitian dan Pengembangan Hasil Hutan

Author-ID : 2621510

Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Chemistry Decision Sciences, Operations Research & Management Energy Materials Science & Nanotechnology

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SIFAT DAN PENGARUH KOMPOSISI MOLEKUL UREA DAN FORMALDEHIDA PADA PEMBUATAN PEREKAT UREA FORMALDEHIDA TERHADAP KETEGUHAN REKAT KAYU LAPIS Suwandi Kliwon
Jurnal Penelitian Hasil Hutan Vol 6, No 6 (1989): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

This paper presents the result of a laboratory study on the properties of Urea formaldehyde resin manufactured with 5 molar ratio treatment of Urea and formaldehyde, and its effect on plywood glue shear strength. All composition of the Urea formaldehyde produced, and its physical properties (appearance, sticky matter, pH and viscosity) meet the Indonesian Indu.stry Standard for class 2a quality.The effects of Urea and formaldehyde molar ratio on glue shear strength of plywood were not significantly different. The average value of glue shear strength of Urea formaldehyde molar ratio 1 : 1,2 and 1 : 1,4 were meet the Indonesian Industry Standard.

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

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

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

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

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

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

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

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

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.

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

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.

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

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