EP0946340B1 - Procede pour stocker et conserver du bois vert rond ou scie - Google Patents

Procede pour stocker et conserver du bois vert rond ou scie Download PDF

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Publication number
EP0946340B1
EP0946340B1 EP97952739A EP97952739A EP0946340B1 EP 0946340 B1 EP0946340 B1 EP 0946340B1 EP 97952739 A EP97952739 A EP 97952739A EP 97952739 A EP97952739 A EP 97952739A EP 0946340 B1 EP0946340 B1 EP 0946340B1
Authority
EP
European Patent Office
Prior art keywords
wood
sheeting
enclosure
vol
storage
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP97952739A
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German (de)
English (en)
Other versions
EP0946340A1 (fr
Inventor
Gerold Mahler
Christoph Richter
Martin Gross
Andreas Weber
Thomas Maier
Jürgen König
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Technische Universitaet Dresden
Original Assignee
Forstliche Versuchs- und Forschungsanstalt Baden-Wuerttemberg
Technische Universitaet Dresden
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Publication date
Application filed by Forstliche Versuchs- und Forschungsanstalt Baden-Wuerttemberg, Technische Universitaet Dresden filed Critical Forstliche Versuchs- und Forschungsanstalt Baden-Wuerttemberg
Publication of EP0946340A1 publication Critical patent/EP0946340A1/fr
Application granted granted Critical
Publication of EP0946340B1 publication Critical patent/EP0946340B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
    • B27K5/00—Treating of wood not provided for in groups B27K1/00, B27K3/00
    • B27K5/0095—Treating of wood not provided for in groups B27K1/00, B27K3/00 by employing wrappers

Definitions

  • the invention relates to a method for preserving Storage of fresh logs and fresh sawn timber, such as Softwood and hardwood, for storage over long periods without loss of quality.
  • Pesticide use is associated with the endangerment of nature and humans.
  • a safe preservation option is the rapid processing and drying of the wood. This forces large cutting and drying reserves to be able to quickly process a large mass of logs (calamities, windthrow). Attempts to preserve fresh logs in dry pile are also known. However, the procedure is associated with a high risk of fungal and insect attack.
  • DE-A-28 57 355 a method for the microbiological modification of hardwood by the action of microorganisms is known.
  • the microorganisms bring about a selective change in the hardwood, the temperature, the moisture content of the wood, the O 2 content and the CO 2 content being regulated with regard to the microorganisms.
  • DE-A-34 34 551 a specific color change is caused on logs by treatment with wood-destroying fungi. The color change occurs at the point where the mushroom culture was applied. The application of several wood cultures is also described, which is associated with an advantageous boundary layer formation.
  • the invention is based on the object of a method develop with fresh logs with reasonable effort or fresh sawn timber of all tree types for a longer one Period without compromising quality and Strength properties can be stored without first sterilized, moistened, dried or with special Shielding gases must be treated.
  • the airtight envelope does not guarantee this Oxygen can enter from the outside and no other generated carbon dioxide can escape from the envelope.
  • This low oxygen content is achieved in that a further cycle begins after the breathing processes customary in fruit storage, in which CO 2 and H 2 O are released and which have ended with the consumption of O 2 . Fermentation processes take place in which additional CO 2 is released so that the proportion of CO 2 can increase further.
  • the start of fermentation processes is in the invention (in Contrary to the storage of fruit) of essential advantage. On Cellulose and lignin breakdown is not associated, as it is only slight soluble sugars are broken down. Thus, the strength of the Get round or sawn timber.
  • the biotechnological process started after the air is closed can be accelerated by minimizing the air volume involved in the casing.
  • a housing advantageously a film with high diffusion resistance, is used to produce the air seal.
  • the film can be doubled to reduce the risk of leakage.
  • the advantage of a flexible cover is that the air volume can be reduced to a minimum (suction until the film tightly encloses the pile or lumber stack surface).
  • the air seal can also be achieved in specially prepared warehouses, containers, ship holds, lined pits, silos or mine tunnels. After a short opening of the airtight casing for the removal of wood, the almost oxygen-free atmosphere is restored after a few days. Regardless of the time of year, the microorganisms are able to bring them back into their favorable condition. In addition, CO 2 , which is stored in the wood as a porous body and dissolved in the water bound in the wood, can be released again to produce a new gas equilibrium.
  • the main advantage of the method according to the invention is in that the preservative storage without an additional Fumigation comes out.
  • Duplicate dual films 2 were spread out on a flat surface and covered with 30 cbm of non-bared profiled wood, spruce 1, diameter groups 15-25 cm.
  • Two measuring hoses 5 were laid without pressure in the pile and fastened to the film 2 with bulkhead screw connections 4 . According to FIG. 1, the protruding film 2 was then pulled over the pile and the two films 2 - separately from one another - were welded with a double seam.
  • the oxygen content drops below 0.1%.
  • the carbon dioxide content levels out at around 40% (cf. FIG. 4). After 24 months of storage, there is no evidence of blueness, red streaking or Halli-mash infestation.
  • the flexural strengths measured according to DIN 52186 after storage are not lower than those of fresh comparative samples (cf. FIG. 5).
  • a maple veneer trunk with a center diameter of 35 cm and a length of 3 m is rolled into double dual film 2 .
  • a bulkhead screw connection is attached near the end faces of trunk 1 .
  • the foils 2 are then double-welded 3 . After 2 weeks there is an atmosphere that contains less than 0.1% oxygen and whose carbon dioxide content is up to 30%.
  • the wood is sealed in airtight Holds, filling the hold volume if possible, layered. Since the holds are already watertight thanks to bulkheads can only be closed, the air seal must be on top through airtight or sealed hatches. Around Shortening the setting time is called initial fumigation Combustion gases from the ship's diesel are fed into the hold.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Storage Of Harvested Produce (AREA)
  • Storage Of Fruits Or Vegetables (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Mushroom Cultivation (AREA)

Claims (14)

  1. Procédé de stockage pour conserver du bois de rond ou de sciage frais où le bois est gardé sous une couverture, ce qui favorise les procédés de respiration et de fermentation de champignons, de bactéries ainsi que les procédés de respiration des cellules encore vivantes du bois, caractérisé par le fait que
    le bois de rond ou de sciage (1) est stocké dans un enrobage imperméable à l'air et à la lumière (2),
    CO2 et H2O ainsi que des acides organiques se forment lors de la décomposition d'oxygène, et ce sont surtout des hémicelluloses qui se transforment,
    pendant tout le stockage, la teneur en oxygène sous l'enrobage, après une durée d'ajustage de 3 à 10 jours, sera inférieure à 0,1, % vol. et la teneur en CO2 entre 21 et 40 % vol., ce qui exclut largement la croissance de champignons lignivores.
  2. Procédé selon la revendication 1, caractérisé par l'insufflation supplémentaire de CO2 pour rapporter la teneur en CO2 à une valeur supérieure à 21 % vol. juste après la mise en stock, ce qui réduit la durée d'ajustage.
  3. Procédé d'après les revendications 1 ou 2, caractérisé par une minimisation de la teneur en air sous l'enrobage, avant que les procédés de respiration et de fermentation commencent.
  4. Procédé d'après les revendications 1 à 3, caractérisé par l'utilisation d'un enrobage dur ou souple ainsi que par l'imperméabilité de l'espace intérieur de l'enrobage à l'air et à la lumière.
  5. Procédé d'après les revendications 1 à 4, caractérisé par l'emploi d'une feuille plastique (2) simple ou double comme enrobage ; celle-ci est résistante à la radiation UV et à la diffusion.
  6. Procédé d'après la revendication 5, caractérisé par l'utilisation d'une feuille plastique bicouche, dont la face intérieure noire (2) empêche l'entrée de lumière et ainsi la croissance d'algues, tandis que la face extérieure blanche reflète la radiation solaire.
  7. Procédé d'après les revendications 5 ou 6, caractérisé par le fait que les feuilles (2) sont fermées séparément ou en même temps par une soudure double.
  8. Procédé d'après les revendications 5 ou 6, caractérisé par le fait que les feuilles (2) sont collées l'une à l'autre.
  9. Procédé d'après les revendications 5 ou 6, caractérisé par le fait que les feuilles (2) sont superposées, serrées entre deux liteaux (6), enroulées autour de ceux-ci et fixées à l'aide d'une attache (7).
  10. Procédé d'après les revendications 5 à 9, caractérisé par des raccords union passe-cloison (4) qui sont placés sur les feuilles pour que les tuyaux gradués de gaz (5) puissent traverser le film plastique.
  11. Procédé d'après les revendications 4 ou 10, caractérisé par le fait que les raccords union passe-cloison ont des tuyaux de rallonge à l'intérieur de l'enrobage dont les bouts sont placés dans des bouts opposés à l'intérieur de l'enrobage.
  12. Procédé d'après la revendication 11, caractérisé par des instruments de mesurage qui sont attachés aux tuyaux gradués de gaz avec des raccords express, afin de contrôler le cours du stockage à l'aide de la composition du gaz.
  13. Procédé d'après la revendication 4, caractérisé par l'utilisation de conteneurs ou de compartiments à marchandises en tant que couverture solide.
  14. Procédé d'après la revendication 13, caractérisé par le fait que les conteneurs ou les compartiments à marchandises sont alimentés ou en gaz d'échappement dégagé lors du procédé de combustion des moyens de transport ou par des installations stationnaires.
EP97952739A 1996-12-19 1997-12-19 Procede pour stocker et conserver du bois vert rond ou scie Expired - Lifetime EP0946340B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19652951A DE19652951A1 (de) 1996-12-19 1996-12-19 Verfahren zur konservierenden Lagerung von frischem Rundholz
DE19652951 1996-12-19
PCT/DE1997/002966 WO1998026907A1 (fr) 1996-12-19 1997-12-19 Procede pour stocker et conserver du bois vert rond ou scie

Publications (2)

Publication Number Publication Date
EP0946340A1 EP0946340A1 (fr) 1999-10-06
EP0946340B1 true EP0946340B1 (fr) 2001-11-14

Family

ID=7815313

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97952739A Expired - Lifetime EP0946340B1 (fr) 1996-12-19 1997-12-19 Procede pour stocker et conserver du bois vert rond ou scie

Country Status (13)

Country Link
US (1) US6830727B1 (fr)
EP (1) EP0946340B1 (fr)
JP (1) JP2001506193A (fr)
CN (1) CN1081521C (fr)
AT (1) ATE208691T1 (fr)
CA (1) CA2274636C (fr)
CZ (1) CZ291309B6 (fr)
DE (2) DE19652951A1 (fr)
DK (1) DK0946340T3 (fr)
ES (1) ES2167807T3 (fr)
NZ (1) NZ336637A (fr)
RU (1) RU2177406C2 (fr)
WO (1) WO1998026907A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19652951A1 (de) 1996-12-19 1998-06-25 Univ Dresden Tech Verfahren zur konservierenden Lagerung von frischem Rundholz
FR2806953B1 (fr) * 2000-03-31 2002-06-21 Step Abri leger et procede pour le stockage et la conservation dans un environnement confine de grumes et/ou de bois scies
CN106965281B (zh) * 2017-04-10 2018-10-23 阜南佳利工艺品有限公司 一种提高杨树木板抗老化性能的处理方法
RU192914U1 (ru) * 2019-06-04 2019-10-07 Федеральное государственное бюджетное образовательное учреждение высшего образования "Уральский государственный лесотехнический университет" Штабель для хранения круглых лесоматериалов

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE267188C (fr) 1911-04-12
US2617202A (en) * 1949-08-15 1952-11-11 Earl L Reedy Process of curing and treating lumber
US3431061A (en) * 1963-10-11 1969-03-04 Union Bag Camp Paper Corp Preserving method for outdoor storage of wood used in paper manufacture
SE407758B (sv) 1977-10-04 1979-04-23 Enfors Sven Olof Forfarande for mikrobiologisk modifiering av lovtre genom inverkan av aeroba mikroorganismer
GB2093081A (en) * 1981-02-12 1982-08-25 Blacknell Buildings Ltd Impregnating timber
SE455477B (sv) 1983-09-20 1988-07-18 Hansson Goeran Forfarande for att bearbeta tre for att astadkomma zoneringar i treet med hjelp av svampar samt zonerat trematerial
DD267188A1 (de) * 1987-12-24 1989-04-26 Univ Dresden Tech Verfahren zur konservierung von holz
JPH0639811A (ja) * 1992-07-27 1994-02-15 Nippon Sanso Kk 木材の保存方法
US5363568A (en) * 1992-11-20 1994-11-15 Cornelia Textiles, Inc. Method of inhibiting lumber checking
US5447686A (en) * 1994-06-17 1995-09-05 Seidner; Marc A. Method for heat-treating wood and wood products
NZ280874A (en) * 1996-01-23 1997-08-22 Nz Forest Research Inst Ltd Prevention of sapstain in wood by applying a water barrier over the wood surface
US5718851A (en) * 1996-04-22 1998-02-17 Wadas, Jr.; Ronald M. Pile cap assembly and method
US5725613A (en) * 1996-07-08 1998-03-10 Hazen Research, Inc Method to reduce oxidative deterioration of bulk materials
US6063336A (en) * 1996-08-02 2000-05-16 Westward Corporation Method and apparatus for wood chip pasteurization
DE19652951A1 (de) 1996-12-19 1998-06-25 Univ Dresden Tech Verfahren zur konservierenden Lagerung von frischem Rundholz

Also Published As

Publication number Publication date
DE59705415D1 (de) 2001-12-20
CN1081521C (zh) 2002-03-27
CZ291309B6 (cs) 2003-01-15
CN1244830A (zh) 2000-02-16
EP0946340A1 (fr) 1999-10-06
WO1998026907A1 (fr) 1998-06-25
CA2274636A1 (fr) 1998-06-25
JP2001506193A (ja) 2001-05-15
DE19652951A1 (de) 1998-06-25
NZ336637A (en) 2001-09-28
ES2167807T3 (es) 2002-05-16
US6830727B1 (en) 2004-12-14
ATE208691T1 (de) 2001-11-15
CA2274636C (fr) 2007-01-30
CZ225099A3 (cs) 2000-01-12
DK0946340T3 (da) 2002-02-25
RU2177406C2 (ru) 2001-12-27

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