PL445547A1 - Method of manufacturing construction elements from shrubby willows - Google Patents

Method of manufacturing construction elements from shrubby willows

Info

Publication number
PL445547A1
PL445547A1 PL445547A PL44554723A PL445547A1 PL 445547 A1 PL445547 A1 PL 445547A1 PL 445547 A PL445547 A PL 445547A PL 44554723 A PL44554723 A PL 44554723A PL 445547 A1 PL445547 A1 PL 445547A1
Authority
PL
Poland
Prior art keywords
rods
shrubby
willows
construction elements
crushed
Prior art date
Application number
PL445547A
Other languages
Polish (pl)
Inventor
Bogusława Waliszewska
Leszek Danecki
Mikołaj Sumionka
Original Assignee
Uniwersytet Przyrodniczy W Poznaniu
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Uniwersytet Przyrodniczy W Poznaniu filed Critical Uniwersytet Przyrodniczy W Poznaniu
Priority to PL445547A priority Critical patent/PL445547A1/en
Publication of PL445547A1 publication Critical patent/PL445547A1/en

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/12—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of wood, e.g. with reinforcements, with tensioning members
    • 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
    • B27M3/0013—Manufacture or reconditioning of specific semi-finished or finished articles of composite or compound articles

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Architecture (AREA)
  • Wood Science & Technology (AREA)
  • Manufacturing & Machinery (AREA)
  • Forests & Forestry (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)

Abstract

Przedmiotem zgłoszenia przedstawionym na rysunku jest sposób wytarzania elementów konstrukcyjnych w jakim jedno-, dwu- lub trzyletnie pręty wierzb krzewiastych gatunku Salix viminalis okorowuje się i usuwa odgałęzienia, korzystnie pręty wierzby zgniata się lub miażdży, a następnie na pręty nanosi się żywicę izocyjanianową PMDI lub inną żywicę, w tym wiążącą na ciepło, zachowując stopień zaklejenia, który wynosi 18% – 20% i umieszcza się pręty w formie tak, aby możliwie ściśle wzajemnie przylegały i prasuje się je przez około 24 godziny przy zachowaniu ciśnienia prasowania 60 MPa w temp. pokojowej ok. 20°C, po czym belkę wyjmuje się z formy.The subject of the application presented in the drawing is a method of manufacturing structural elements in which one-, two- or three-year-old rods of shrubby willows of the Salix viminalis species are debarked and branches are removed, preferably the willow rods are crushed or crushed, and then PMDI isocyanate resin or another resin, including a heat-setting resin, is applied to the rods, maintaining a degree of sizing of 18% - 20% and the rods are placed in a mould so that they adhere to each other as closely as possible and they are pressed for about 24 hours while maintaining a pressing pressure of 60 MPa at a room temperature of about 20°C, after which the beam is removed from the mould.

PL445547A 2023-07-11 2023-07-11 Method of manufacturing construction elements from shrubby willows PL445547A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL445547A PL445547A1 (en) 2023-07-11 2023-07-11 Method of manufacturing construction elements from shrubby willows

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PL445547A PL445547A1 (en) 2023-07-11 2023-07-11 Method of manufacturing construction elements from shrubby willows

Publications (1)

Publication Number Publication Date
PL445547A1 true PL445547A1 (en) 2025-01-13

Family

ID=94177738

Family Applications (1)

Application Number Title Priority Date Filing Date
PL445547A PL445547A1 (en) 2023-07-11 2023-07-11 Method of manufacturing construction elements from shrubby willows

Country Status (1)

Country Link
PL (1) PL445547A1 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4128100A1 (en) * 1991-08-24 1993-02-25 Georg H Schollmayer Vermoegens Composite wooden beam - has core formed of half logs with flat outer panels glued to the logs
PL224876B1 (en) * 2011-06-10 2017-02-28 Fabryka Domów Spółka Z Ograniczoną Odpowiedzialnością Reinforced wooden beam

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4128100A1 (en) * 1991-08-24 1993-02-25 Georg H Schollmayer Vermoegens Composite wooden beam - has core formed of half logs with flat outer panels glued to the logs
PL224876B1 (en) * 2011-06-10 2017-02-28 Fabryka Domów Spółka Z Ograniczoną Odpowiedzialnością Reinforced wooden beam

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