WO1998026907A1 - Verfahren zur konservierenden lagerung von frischem rund- und schnittholz - Google Patents
Verfahren zur konservierenden lagerung von frischem rund- und schnittholz Download PDFInfo
- Publication number
- WO1998026907A1 WO1998026907A1 PCT/DE1997/002966 DE9702966W WO9826907A1 WO 1998026907 A1 WO1998026907 A1 WO 1998026907A1 DE 9702966 W DE9702966 W DE 9702966W WO 9826907 A1 WO9826907 A1 WO 9826907A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- sawn timber
- wood
- film
- double
- storage
- Prior art date
Links
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 the preservative storage of fresh logs and fresh sawn timber, such as softwood and hardwood, for storage over long periods of time without loss of quality.
- common general preservation methods preferably concern foods that are either sterilized with the exclusion of air and heating (boil down) or are gassed in the dry state with carbon dioxide (grain protection against grain beetle infestation) or treated with protective gases of a special composition (fruit storage and ripening under a nitrogen-carbon dioxide atmosphere ) or be cleaned of insects under pure nitrogen (restoration of wooden objects whose color pigments would be attacked by carbon dioxide).
- the methods previously used to preserve fresh logs are based on water storage or sprinkling with water.
- the aim is to maintain a high wood moisture content of over 100% so that fungus growth is prevented.
- Disadvantages are the high water consumption and the groundwater contamination with wood constituents, combined with different moisture in the interior of the pile, with the possible consequence of fungal attack (Hallimasch).
- insecticides and fungicides logs and sawn timber can be preserved temporarily. Pesticide use is associated with the risk to 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).
- microbiological modification of hardwood by the action of microorganisms brings about a selective change in the hardwood, the temperature, the moisture content of the wood, the 0 2 content and the C0 2 content being regulated with regard to the microorganisms.
- DE-OS 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. It will also be the application described several wood cultures, which is associated with an advantageous boundary layer formation.
- the invention has for its object to develop a method with which fresh log or fresh sawn timber of all tree types can be stored for a long period of time without impairing the quality and strength properties, without sterilizing, moistening, drying or using special protective gases must be treated.
- This low oxygen content is achieved in that after the breathing processes customary in fruit storage, in which CO . , and H 2 0 is released and which have finished consuming 0 2 , another cycle begins. Fermentation processes take place in which additional C0 2 is released, so that the proportion of C0 2 can increase further.
- 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 surrounds the surface of the log or sawn timber).
- the air seal can also be achieved in specially prepared warehouses, containers, ship holds, lined pits, silos or mine tunnels.
- the microorganisms 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.
- C0 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 balance.
- the air is sealed off from the layered or long wood piles, and from valuable (veneer) the Individual protection, rationally achieved with a double weld seam on the enveloping film or by gluing, or by clamping the smoothly lying film webs with strips, around which the film is then wrapped tightly and secured with clamps against rewinding.
- the main advantage of the method according to the invention is that the preservative storage does not require additional gassing.
- Fig. 1 shows an arrangement with several round timbers welded or glued double foil wrapping.
- 2 shows an arrangement with a round timber with welded or glued double foil wrapping.
- 3 shows a clamp connection at the foil edges.
- Fig. 4 shows a diagram showing the gas development
- FIG. 5 is a diagram showing the bending strength in the
- Double dual films were spread out on a flat surface and covered with 30 cbm of untreated spruce wood, diameter groups 15-25 cm.
- Two measuring tubes were laid without pressure in the pile and fastened to the film with bulkhead screw connections. According to FIG. 1, the protruding film was then pulled over the pile and the two films - 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 up in double dual film.
- a bulkhead screw connection is attached near the end faces of the trunk.
- the foils are then welded twice. After 2 weeks there is an atmosphere a, which contains less than 0.1% oxygen and whose carbon dioxide content is up to 30%.
- the wood is layered in airtight cargo holds, preferably filling the cargo space volume. Since the cargo holds can already be sealed watertight by bulkheads, the air seal only has to be made on the top by airtight or sealed hatches. In order to shorten the setting time, combustion gases from the ship's diesel are fed into the hold as initial gassing.
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)
Abstract
Description
Claims
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DK97952739T DK0946340T3 (da) | 1996-12-19 | 1997-12-19 | Fremgangsmåde til konserverende opbevaring af frisk rund- og snittræ |
EP97952739A EP0946340B1 (de) | 1996-12-19 | 1997-12-19 | Verfahren zur konservierenden lagerung von frischem rund- und schnittholz |
US09/319,126 US6830727B1 (en) | 1996-12-19 | 1997-12-19 | Method for stocking and preserving green round wood and sawn timber |
NZ336637A NZ336637A (en) | 1996-12-19 | 1997-12-19 | Method for stocking and preserving green wood timber using a controlled environment low in oxygen |
JP52719698A JP2001506193A (ja) | 1996-12-19 | 1997-12-19 | 生の丸い木および切った材木を貯蔵および保存する方法 |
CA002274636A CA2274636C (en) | 1996-12-19 | 1997-12-19 | Method for stocking and preserving green round wood and sawn timber |
DE59705415T DE59705415D1 (de) | 1996-12-19 | 1997-12-19 | Verfahren zur konservierenden lagerung von frischem rund- und schnittholz |
AT97952739T ATE208691T1 (de) | 1996-12-19 | 1997-12-19 | Verfahren zur konservierenden lagerung von frischem rund- und schnittholz |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19652951.4 | 1996-12-19 | ||
DE19652951A DE19652951A1 (de) | 1996-12-19 | 1996-12-19 | Verfahren zur konservierenden Lagerung von frischem Rundholz |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1998026907A1 true WO1998026907A1 (de) | 1998-06-25 |
Family
ID=7815313
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE1997/002966 WO1998026907A1 (de) | 1996-12-19 | 1997-12-19 | Verfahren zur konservierenden lagerung von frischem rund- und schnittholz |
Country Status (13)
Country | Link |
---|---|
US (1) | US6830727B1 (de) |
EP (1) | EP0946340B1 (de) |
JP (1) | JP2001506193A (de) |
CN (1) | CN1081521C (de) |
AT (1) | ATE208691T1 (de) |
CA (1) | CA2274636C (de) |
CZ (1) | CZ291309B6 (de) |
DE (2) | DE19652951A1 (de) |
DK (1) | DK0946340T3 (de) |
ES (1) | ES2167807T3 (de) |
NZ (1) | NZ336637A (de) |
RU (1) | RU2177406C2 (de) |
WO (1) | WO1998026907A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1139047A1 (de) | 2000-03-31 | 2001-10-04 | Step | Leichte Abdeckung und Verfahren zur Lagerung und Aufbewahrung von organischen, biologisch abbaubaren Produkten in einer geschlossenen Umgebung |
Families Citing this family (3)
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 |
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 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2617202A (en) * | 1949-08-15 | 1952-11-11 | Earl L Reedy | Process of curing and treating lumber |
GB2093081A (en) * | 1981-02-12 | 1982-08-25 | Blacknell Buildings Ltd | Impregnating timber |
DD267188A1 (de) * | 1987-12-24 | 1989-04-26 | Univ Dresden Tech | Verfahren zur konservierung von holz |
US5363568A (en) * | 1992-11-20 | 1994-11-15 | Cornelia Textiles, Inc. | Method of inhibiting lumber checking |
WO1997027034A1 (en) * | 1996-01-23 | 1997-07-31 | New Zealand Forest Research Institute Limited | Method of inhibiting sapstain in wood |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE267188C (de) | 1911-04-12 | |||
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 |
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 |
JPH0639811A (ja) * | 1992-07-27 | 1994-02-15 | Nippon Sanso Kk | 木材の保存方法 |
US5447686A (en) * | 1994-06-17 | 1995-09-05 | Seidner; Marc A. | Method for heat-treating wood and wood products |
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 |
-
1996
- 1996-12-19 DE DE19652951A patent/DE19652951A1/de not_active Withdrawn
-
1997
- 1997-12-19 CZ CZ19992250A patent/CZ291309B6/cs not_active IP Right Cessation
- 1997-12-19 US US09/319,126 patent/US6830727B1/en not_active Expired - Fee Related
- 1997-12-19 CN CN97180821A patent/CN1081521C/zh not_active Expired - Fee Related
- 1997-12-19 ES ES97952739T patent/ES2167807T3/es not_active Expired - Lifetime
- 1997-12-19 NZ NZ336637A patent/NZ336637A/en unknown
- 1997-12-19 AT AT97952739T patent/ATE208691T1/de active
- 1997-12-19 EP EP97952739A patent/EP0946340B1/de not_active Expired - Lifetime
- 1997-12-19 WO PCT/DE1997/002966 patent/WO1998026907A1/de active IP Right Grant
- 1997-12-19 CA CA002274636A patent/CA2274636C/en not_active Expired - Fee Related
- 1997-12-19 DK DK97952739T patent/DK0946340T3/da active
- 1997-12-19 JP JP52719698A patent/JP2001506193A/ja not_active Ceased
- 1997-12-19 RU RU99116020/12A patent/RU2177406C2/ru not_active IP Right Cessation
- 1997-12-19 DE DE59705415T patent/DE59705415D1/de not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2617202A (en) * | 1949-08-15 | 1952-11-11 | Earl L Reedy | Process of curing and treating lumber |
GB2093081A (en) * | 1981-02-12 | 1982-08-25 | Blacknell Buildings Ltd | Impregnating timber |
DD267188A1 (de) * | 1987-12-24 | 1989-04-26 | Univ Dresden Tech | Verfahren zur konservierung von holz |
US5363568A (en) * | 1992-11-20 | 1994-11-15 | Cornelia Textiles, Inc. | Method of inhibiting lumber checking |
WO1997027034A1 (en) * | 1996-01-23 | 1997-07-31 | New Zealand Forest Research Institute Limited | Method of inhibiting sapstain in wood |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1139047A1 (de) | 2000-03-31 | 2001-10-04 | Step | Leichte Abdeckung und Verfahren zur Lagerung und Aufbewahrung von organischen, biologisch abbaubaren Produkten in einer geschlossenen Umgebung |
Also Published As
Publication number | Publication date |
---|---|
EP0946340A1 (de) | 1999-10-06 |
CA2274636A1 (en) | 1998-06-25 |
ES2167807T3 (es) | 2002-05-16 |
NZ336637A (en) | 2001-09-28 |
CN1081521C (zh) | 2002-03-27 |
CA2274636C (en) | 2007-01-30 |
CZ225099A3 (cs) | 2000-01-12 |
DE59705415D1 (de) | 2001-12-20 |
EP0946340B1 (de) | 2001-11-14 |
DE19652951A1 (de) | 1998-06-25 |
DK0946340T3 (da) | 2002-02-25 |
JP2001506193A (ja) | 2001-05-15 |
CZ291309B6 (cs) | 2003-01-15 |
US6830727B1 (en) | 2004-12-14 |
ATE208691T1 (de) | 2001-11-15 |
RU2177406C2 (ru) | 2001-12-27 |
CN1244830A (zh) | 2000-02-16 |
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