WO2012021077A1 - Process of production of a wooden core layer for floorboards or particle boards - Google Patents
Process of production of a wooden core layer for floorboards or particle boards Download PDFInfo
- Publication number
- WO2012021077A1 WO2012021077A1 PCT/PL2011/000086 PL2011000086W WO2012021077A1 WO 2012021077 A1 WO2012021077 A1 WO 2012021077A1 PL 2011000086 W PL2011000086 W PL 2011000086W WO 2012021077 A1 WO2012021077 A1 WO 2012021077A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- core layer
- glue
- length
- batch
- planks
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27M—WORKING OF WOOD NOT PROVIDED FOR IN SUBCLASSES B27B - B27L; MANUFACTURE OF SPECIFIC WOODEN ARTICLES
- B27M3/00—Manufacture or reconditioning of specific semi-finished or finished articles
- B27M3/04—Manufacture or reconditioning of specific semi-finished or finished articles of flooring elements, e.g. parqueting blocks
- B27M3/06—Manufacture or reconditioning of specific semi-finished or finished articles of flooring elements, e.g. parqueting blocks of composite floor plates per se by assembling or jointing the parqueting blocks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27D—WORKING VENEER OR PLYWOOD
- B27D1/00—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring
- B27D1/04—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring to produce plywood or articles made therefrom; Plywood sheets
- B27D1/06—Manufacture of central layers; Form of central layers
Definitions
- the Swedish company Kahr Gustaf developed the construction process of floorboards or particle boards with the core layer made of low quality wooden slats.
- the core layer was covered with a face layer of high mechanical and aesthetic parameters that fulfilled the functional requirements of the board.
- this solution was presented in the Canadian CA430631 patent description.
- the core layer was made of numerous low quality wooden slats situated parallel to each other in the same plane.
- the construction development towards imparting favourable resilient properties resulted in the introduction of joints between the slats placed at the distances of the slits ranging from 0.5 to 5 mm.
- the German description of the DE102007062144 invention reveals a method of producing the core layer - its essence lies in the fact that nicks in the form of at least two grooves situated perpendicularly to the width of slats, placed nearby both of their ends, are made in these slats, which were previously manufactured and placed parallel to each other. Then, the slats are moved away by slits ranging from 0.5 to 5 mm in width, and the next phase includes inserting a fusible glue of a short hardening period and elasticity persisting after hardening into the grooves by a constant stream. The obtained binder obtained partially penetrates the slits between the slats, preparing slats' joints to the extent that is essential for the further phases of board production.
- the process of production of the wooden core layer consisting of numerous low quality wooden slats situated parallel to each other in the same plane within a slit distance ranging from 0.5 to 5 mm and joined together by at least two glue seams, can be performed by two technological methods.
- the first method arising from this invention entails performing the following actions:
- planks placed one onto another are used to prepare a packet of the length no shorter than the core layer width, attaching each following plank to the previous one with at least two linear glue seams at the same time, directed transversely to the plank length and simultaneously separating the planks by the slits' intervals,
- the next phase entails cutting the batch into slat grillages with a vertical log bandsaw, in the planes parallel to the side determining the batch height and positioned within the distance equal to the core layer thickness, - during the last phase a slat grillage is adjusted to the core layer size.
- the slats of the core layer formed in this method are positioned along their length dimension.
- glue connections constitute glue seams 0.5 to 3 mm high.
- the second method arising from this invention entails performing the following actions:
- planks placed one onto another are used to prepare a packet and simultaneously attaching each further plank to the previous one with at least two linear glue seams directed transversely to the plank length and separating planks by the slits' intervals,
- the next phase entails cutting the packet into some slat grillages with a vertical log bandsaw in the planes parallel to the side determining the batch height and positioned within the distance equal to the core layer thickness,
- the core layer formed in this method is composed of slats placed transversely to its length.
- FIG. 1-7 present the successive steps of the first process
- figures 8-11 show the final steps of the second process.
- the first invented process of wooden core layer production is mostly applied to floorboard production where slats are directed along their longer sides.
- Glue seams (3) are made by a fusible glue of a short hardening period and elasticity persisting after hardening. Apart from joining planks (1) together, the glue seams (3) help to separate the planks (1) by slits (4) approx. 2 mm wide.
- a slat grillage (7) obtained by this technological method is manufactured by applying the process described as the first one provided that the planks (1) are cut in such a way that their length II is determined as a multiple of the n width dimension b2 of the core layer (12b) and the technological extra length x.
- a number of slat grillages (7) in accordance with the length 12 of the core layer (12b) is placed next to each other, forming the slat plane (8) - slats in the slat grillages (7) are directed perpendicularly to the length 12 of the core layer (12b) .
- a longitudinal connection along adjacent slat grillages (7) is made with adhesive tape (9) and/or bands inserted into previously cut grooves.
- An adhesive tape (9) and/or bands (10) are placed inside the planned strips (11), only fairly in the zones along the longer sides when the whole width of the slat grillage (7) is used for the core layer (12b) as shown in Figure 8.
- a wooden back covering (13) for example in the form of plywood 2-4 mm wide, is stuck to the whole surface.
- the final phases entail cutting the slat plane (8) into strips (11) equal to the core layer (12b) width b2 and formatting the length 12, or almost only dimensional formatting in the situation where the core layer (12b) occupies the entire width of slat grillages (7) .
- planks of 1 m J were used to obtain 93 m 2 of finished planks, and the waste material amounted to 10% instead of almost 40% if the individual technology is applied.
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Mechanical Engineering (AREA)
Abstract
Process of production of a wooden core layer for floorboards or particle boards with face and back veneers or double faced layers. Plank placed one onto another and joined with glue seams, are used to prepare a batch of height larger than the core layer width. A fusible glue of a short hardening period and elasticity persisting after hardening is used. Apart from joining planks together, the glue seams help to separate the planks by slits approx. 2 mm. using one of two types of glue seams: in the case of narrower slits by the direct application of glue binder 2 mm wide after hardening, whereas in the case of wider 3-5 mm slits, interleaved wooden slats are used. Each subsequent plank is fixed to the previous one by at least two glue seams directed transversely to the plank length close to both ands of a plank, and in places where knots and fissures are situated. The force of press pressure is applied while sticking a batch. The batch is cut into slat grillages in the planes parallel to the side that determines the height of a batch.
Description
PROCESS OF PRODUCTION OF A WOODEN CORE LAYER FOR
FLOORBOARDS OR PARTICLE BOARDS
The invention subject matter is the process of production of a wooden core layer for floorboards or particle boards with face and back veneers or double faced layers.
In the 1940s, the Swedish company Kahr Gustaf developed the construction process of floorboards or particle boards with the core layer made of low quality wooden slats. The core layer was covered with a face layer of high mechanical and aesthetic parameters that fulfilled the functional requirements of the board. For example, this solution was presented in the Canadian CA430631 patent description. The core layer was made of numerous low quality wooden slats situated parallel to each other in the same plane. The construction development towards imparting favourable resilient properties resulted in the introduction of joints between the slats placed at the distances of the slits ranging from 0.5 to 5 mm. The German description of the DE102007062144 invention reveals a method of producing the core layer - its essence lies in the fact that nicks in the form of at least two grooves situated perpendicularly to the width of slats, placed nearby both of their ends, are made in these slats, which were previously manufactured and placed parallel to each other. Then, the slats are moved away by slits ranging from 0.5 to 5 mm in width, and the next phase includes inserting a fusible glue of a short hardening period and elasticity persisting after hardening into the grooves by a constant stream. The obtained binder obtained partially
penetrates the slits between the slats, preparing slats' joints to the extent that is essential for the further phases of board production.
In hitherto prevailing production methods biological wood defects including knots, decay, and fissures lead to the fact that, during the first stage of cutting the planks into slats, a significant amount of waste is created even amounting to 40%. Such waste wood can be only used as firewood or recycled by an additional amount of work by joining short slat segments up to the required length by the well-known latching method.
According to the invention described in this document, the process of production of the wooden core layer consisting of numerous low quality wooden slats situated parallel to each other in the same plane within a slit distance ranging from 0.5 to 5 mm and joined together by at least two glue seams, can be performed by two technological methods.
The first method arising from this invention entails performing the following actions:
- lumber of 20-50 mm in width is cut into planks whose length depends on the core layer length and the technological extra length,
- next, some or several planks placed one onto another are used to prepare a packet of the length no shorter than the core layer width, attaching each following plank to the previous one with at least two linear glue seams at the same time, directed transversely to the plank length and simultaneously separating the planks by the slits' intervals,
- the next phase entails cutting the batch into slat grillages with a vertical log bandsaw, in the planes parallel to the side determining the batch height and positioned within the distance equal to the core layer thickness,
- during the last phase a slat grillage is adjusted to the core layer size.
The slats of the core layer formed in this method are positioned along their length dimension.
It is advantageous if the plank glue seams of the packet are made close to both planks' ends and in places where knots and fissures are situated, which provides the continuity of the connection along the batch length after cutting the batch.
It is advantageous if glue seams are made using flat interleaved slats 0.5 to 5 mm thick and their width no shorter than the core layer thickness, and their length equal to the plank width.
It is also advantageous if the glue connections constitute glue seams 0.5 to 3 mm high.
The second method arising from this invention entails performing the following actions:
- lumber of 20-50 mm width is cut into planks, whose length is determined as a multiple of the core layer width and the technological extra length,
- next, some or several such planks placed one onto another are used to prepare a packet and simultaneously attaching each further plank to the previous one with at least two linear glue seams directed transversely to the plank length and separating planks by the slits' intervals,
- the next phase entails cutting the packet into some slat grillages with a vertical log bandsaw in the planes parallel to the side determining the batch height and positioned within the distance equal to the core layer thickness,
- arranging slat grillages next to each other into a slat plane as their number along its length dimension slightly exceeds the core layer length constitute at right angles to the slats,
- connecting the slat plane along the direction of its length with an adhesive tape or pincers inserted into the cut grooves,
- a 180° turn of the slat plane and sticking a wooden back covering onto the whole surface,
- finally, cutting the slat plane along its length into strips of the core layer width.
The core layer formed in this method is composed of slats placed transversely to its length.
Making glue seams of the batch is equally effective in both aforementioned methods of core layer production.
The figures provide a technological description depicting successive steps of both types of the process of wooden core layer production. Figures 1-7 present the successive steps of the first process, and figures 8-11 show the final steps of the second process.
The first invented process of wooden core layer production is mostly applied to floorboard production where slats are directed along their longer sides.
Spruce lumber 40 mm thick and 120 mm wide is cut into planks (1) of length determined by the core layer (12a) length 11 = 1000 mm and the technological extra length x = 20 mm. Next, 8 planks (1), placed one onto another and joined with glue seams (3), are used to prepare a batch (2) of height h=360 mm that is larger than the core layer (12a) width bl = 340 mm. Glue seams (3) are made by a fusible glue of a short hardening period and elasticity persisting after hardening. Apart from joining planks (1) together, the glue seams (3) help to separate the planks (1) by slits (4) approx. 2 mm wide. This aim can be achieved by two types of glue seams (3) : in the case of narrower slits (4) by the direct application of glue binder (6) 2 mm wide after hardening, whereas in the case of wider 3-5 mm slits, interleaved wooden
slats of a width larger than the g core layer thickness (12a) and length equals to the plank (1) width are used to paste them in these slits. Figure 2 depicts both versions of glue seams. Each subsequent plank is fixed to the previous one by at least two glue seams (3) directed transversely to the plank length (1) close to both ends of a plank, and in places where knots and fissures are situated. The force of press pressure is applied while sticking a batch (2). During the next phase, a vertical log bandsaw is used to cut a batch (2) with saws 1 mm thick into 12 slat grillages (7) of thickness g = 8 mm, in the planes parallel to the side that determines the height h of a batch (2) - they are at right angles to the planks (1) . During the last phase, each slat grillage (7) is trimmed to the sizes required by the core layer format (12a) bl = 350 mm and II = 100 mm.
The second type of the process of the core layer production is mostly applied in producing boards of bigger dimensions, linearly long strips, and especially large surface particle boards. A slat grillage (7) obtained by this technological method is manufactured by applying the process described as the first one provided that the planks (1) are cut in such a way that their length II is determined as a multiple of the n width dimension b2 of the core layer (12b) and the technological extra length x. A number of slat grillages (7) in accordance with the length 12 of the core layer (12b) is placed next to each other, forming the slat plane (8) - slats in the slat grillages (7) are directed perpendicularly to the length 12 of the core layer (12b) . Next, a longitudinal connection along adjacent slat grillages (7) is made with adhesive tape (9) and/or bands inserted into previously cut grooves. An adhesive tape (9) and/or bands (10) are placed inside the planned strips (11), only fairly in the zones along the longer sides when the whole width of the slat
grillage (7) is used for the core layer (12b) as shown in Figure 8. During the next phase, after the slat plane (8) is turned 180 degrees, a wooden back covering (13), for example in the form of plywood 2-4 mm wide, is stuck to the whole surface. The final phases entail cutting the slat plane (8) into strips (11) equal to the core layer (12b) width b2 and formatting the length 12, or almost only dimensional formatting in the situation where the core layer (12b) occupies the entire width of slat grillages (7) .
While carrying out the test production of the core layers (12a) , planks of 1 mJ were used to obtain 93 m2 of finished planks, and the waste material amounted to 10% instead of almost 40% if the individual technology is applied.
List of labels in the figure
1 - plank
2 - batch
3 - glue seam
4 - slit
5 - interleaved slat
6 - glue binder
7 - slat grillage
8 - slat plane
9 - adhesive tape
10 - pincer
11 - belt
12a - core layer conforming to the 1st type of process
12b - core layer conforming to the 2nd type of process
13 - wooden back covering
h - batch height
bl - width of core layer conforming to the 1st type of process
b2 - width of core layer conforming to the 2nd type of process
g - core layer thickness
11 - length of core layer conforming to the 1st type of process
12 - length of core layer conforming to the 2nd type of process
x - extra length
Claims
Claims
The process of producing the wooden core layer for floorboards or particle boards, which is a core layer made of a lot of low quality wooden slats, placed parallel to each other in the same plane with slits 0.5-5 mm wide, and joined together by at least two glue seams made of a fusible glue of short hardening period and elasticity persisting after hardening, is exceptional because:
lumber 20-50 mm in width is cut into planks (1) of the length II + x, which is determined by the technological length II of the core layer (12a) and the extra technological length x,
next, some or several planks (1) placed one onto another are used to prepare a batch (2) of the height h no shorter than the core layer (12a) width bl, attaching each further plank (1) to the previous one with at least two linear glue seams (3) at the same time, directed transversely to the plank (1) length and simultaneously separating planks (1) by slits' intervals,
the next phase entails cutting the batch (2) into some slat grillages (7) with a vertical log bandsaw, in the planes parallel to the side determining the batch (2) height h and positioned within the distance equal to the core layer (12a) thickness g,
formatting the slat grillage (7) to the dimensions (bl x 11) of the core layer (12a) .
The process being in accordance with claim 1 is exceptional because planks' (1) glue seams (3) in the batch (2) are made close to the planks' (1) both ends and in places where knots and fissures are situated.
The process being in accordance with claims 1 or 2 is exceptional because the glue seams (3) are made using flat interleaved slats (5) 0.5 to 5 mm thick, and their width is no shorter than the core layer thickness g and the length equal to the plank (1) width.
The process being in accordance with claims 1 or 2 is exceptional because the glue seams (3) are glue binders (6) 0.5 to 3 mm high.
The process of producing the wooden core layer for floorboards or particle boards, which is a core layer made of a lot of low quality wooden slats placed parallel to each other in the same plane with slits 0.5-5 mm wide, and joined together by at least two glue seams made with a fusible glue of a short hardening period and elasticity persisting after hardening, is exceptional because:
lumber 20-50 mm in width is cut into planks (1), whose length (II) is determined as a multiple (n) of the core layer (12b) width (b2) and the technological extra length (x) ,
next, some or several such planks (1) placed one onto another are used to prepare a batch (2), attaching each further plank (1) to the previous one with at least two linear glue seams (3) at the same time, directed transversely to the plank (1) length and simultaneously separating planks (1) by the slits' (4) intervals, the next phase entails cutting the batch (2) into some
slat grillages (7) with a vertical log bandsaw, in the planes parallel to the side determining the batch (2) height h and positioned within the distance equal to the core layer (12b) thickness g,
arranging such slat grillages (7) next to each other into a slat plane (8) , as their amount constitutes along its length dimension, at right angles to the slats (1) , a dimension a bit longer than the core layer (12 b) length 12,
connecting the slat (8) plane along the direction of its length with adhesive tape (9) or pincers (10) inserted into the cut grooves,
a 180° turn of the slat (8) plane and sticking wooden back covering (13) onto the whole surface,
cutting the slat (8) plane along its length into
strips (11) of the core layer (12b) width b2.
The process being in accordance with claim 5 is exceptional because planks' (1) glue seams (3) in the batch (2) are made close to the planks' (1) both ends and where knots and fissures appear.
The process being in accordance with claims 5 or 6 is exceptional because the glue seams (3) are made using flat interleaved slats (5) 0.5 to 5 mm thick, and their width is no shorter than the core layer (12) thickness g and the length equal to the plank (1) width.
The process being in accordance with claims 5 or 6 is exceptional because the glue seams (3) are glue binders (6) 0.5 to 3 mm high.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL392091A PL228156B1 (en) | 2010-08-10 | 2010-08-10 | Method for producing wooden core layer for floor or furniture panels |
| PLP.392091 | 2010-08-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2012021077A1 true WO2012021077A1 (en) | 2012-02-16 |
Family
ID=44674852
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/PL2011/000086 WO2012021077A1 (en) | 2010-08-10 | 2011-08-04 | Process of production of a wooden core layer for floorboards or particle boards |
Country Status (2)
| Country | Link |
|---|---|
| PL (1) | PL228156B1 (en) |
| WO (1) | WO2012021077A1 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105619543A (en) * | 2016-01-16 | 2016-06-01 | 杭州富丽来装饰材料有限公司 | Hipboard production process |
| RU173210U1 (en) * | 2016-12-19 | 2017-08-16 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Поволжский государственный технологический университет" | Plywood panel |
| RU179234U1 (en) * | 2017-12-18 | 2018-05-07 | Российская Федерация в лице Федеральное государственное бюджетное образовательное учреждение высшего образования "Поволжский государственный технологический университет" | Plywood panel |
| CN111088880A (en) * | 2019-11-08 | 2020-05-01 | 江西兴创木业有限责任公司 | Laminated wood standing wood elastic floor and manufacturing method thereof |
| RU204008U1 (en) * | 2020-12-17 | 2021-05-04 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Поволжский государственный технологический университет" | Plywood scraps |
| CN113211588A (en) * | 2021-04-30 | 2021-08-06 | 浙江东柱智能家具制造有限公司 | Wood board pressure bonding equipment for cabinet manufacturing |
| RU2760899C1 (en) * | 2021-05-13 | 2021-12-01 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Поволжский государственный технологический университет" | Method for manufacturing structural material |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB299025A (en) * | 1927-10-19 | 1929-04-25 | Richard Hueneke | Improvements in and relating to the manufacture of plywood |
| DE527701C (en) * | 1927-11-02 | 1931-06-20 | Helene Henn Geb Weber | Process for the production of middle layers for plywood panels |
| CA430631A (en) | 1945-10-16 | Kahr Gustaf | Board flooring | |
| DE908913C (en) * | 1951-07-31 | 1954-04-12 | Max Zumkeller | Method for producing a rust-shaped middle layer for blockboard u. like |
| DE1528139A1 (en) * | 1965-03-25 | 1970-03-19 | Heinrich Ratjen Fa | Process for the production of a middle layer of a plywood board |
| US3730797A (en) * | 1970-03-11 | 1973-05-01 | Gutzeitin Laatikkotehdas Ab Oy | Method for manufacturing building boards with chequer-square pattern |
| WO1998012030A1 (en) * | 1995-03-22 | 1998-03-26 | Reijo Viljanen | A method for manufacturing wooden boards by glueing and a board |
| EP1213108A2 (en) * | 2000-12-08 | 2002-06-12 | Robert Bürkle GmbH | Method and apparatus for the manufacture of a core layer for laminated parquet flooring |
| DE102007062144A1 (en) | 2007-07-26 | 2009-02-05 | Hamberger Industriewerke Gmbh | Floor panel for use with central position carpet, has cover layer, sub-construction and slats that are arranged at distance to each other, where slats are connected by connecting mass |
| EP2055455A1 (en) * | 2007-10-31 | 2009-05-06 | hülsta-werke Hüls GmbH & Co. KG | Method for manufacturing lamellae for floors |
-
2010
- 2010-08-10 PL PL392091A patent/PL228156B1/en unknown
-
2011
- 2011-08-04 WO PCT/PL2011/000086 patent/WO2012021077A1/en active Application Filing
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA430631A (en) | 1945-10-16 | Kahr Gustaf | Board flooring | |
| GB299025A (en) * | 1927-10-19 | 1929-04-25 | Richard Hueneke | Improvements in and relating to the manufacture of plywood |
| DE527701C (en) * | 1927-11-02 | 1931-06-20 | Helene Henn Geb Weber | Process for the production of middle layers for plywood panels |
| DE908913C (en) * | 1951-07-31 | 1954-04-12 | Max Zumkeller | Method for producing a rust-shaped middle layer for blockboard u. like |
| DE1528139A1 (en) * | 1965-03-25 | 1970-03-19 | Heinrich Ratjen Fa | Process for the production of a middle layer of a plywood board |
| US3730797A (en) * | 1970-03-11 | 1973-05-01 | Gutzeitin Laatikkotehdas Ab Oy | Method for manufacturing building boards with chequer-square pattern |
| WO1998012030A1 (en) * | 1995-03-22 | 1998-03-26 | Reijo Viljanen | A method for manufacturing wooden boards by glueing and a board |
| EP1213108A2 (en) * | 2000-12-08 | 2002-06-12 | Robert Bürkle GmbH | Method and apparatus for the manufacture of a core layer for laminated parquet flooring |
| DE102007062144A1 (en) | 2007-07-26 | 2009-02-05 | Hamberger Industriewerke Gmbh | Floor panel for use with central position carpet, has cover layer, sub-construction and slats that are arranged at distance to each other, where slats are connected by connecting mass |
| EP2055455A1 (en) * | 2007-10-31 | 2009-05-06 | hülsta-werke Hüls GmbH & Co. KG | Method for manufacturing lamellae for floors |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105619543A (en) * | 2016-01-16 | 2016-06-01 | 杭州富丽来装饰材料有限公司 | Hipboard production process |
| RU173210U1 (en) * | 2016-12-19 | 2017-08-16 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Поволжский государственный технологический университет" | Plywood panel |
| RU179234U1 (en) * | 2017-12-18 | 2018-05-07 | Российская Федерация в лице Федеральное государственное бюджетное образовательное учреждение высшего образования "Поволжский государственный технологический университет" | Plywood panel |
| CN111088880A (en) * | 2019-11-08 | 2020-05-01 | 江西兴创木业有限责任公司 | Laminated wood standing wood elastic floor and manufacturing method thereof |
| RU204008U1 (en) * | 2020-12-17 | 2021-05-04 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Поволжский государственный технологический университет" | Plywood scraps |
| CN113211588A (en) * | 2021-04-30 | 2021-08-06 | 浙江东柱智能家具制造有限公司 | Wood board pressure bonding equipment for cabinet manufacturing |
| RU2760899C1 (en) * | 2021-05-13 | 2021-12-01 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Поволжский государственный технологический университет" | Method for manufacturing structural material |
Also Published As
| Publication number | Publication date |
|---|---|
| PL228156B1 (en) | 2018-02-28 |
| PL392091A1 (en) | 2012-02-13 |
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