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PL446488A1 - Method of manufacturing thin chipboards based on ecological binder - Google Patents

Method of manufacturing thin chipboards based on ecological binder

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Publication number
PL446488A1
PL446488A1PL446488APL44648823APL446488A1PL 446488 A1PL446488 A1PL 446488A1PL 446488 APL446488 APL 446488APL 44648823 APL44648823 APL 44648823APL 446488 A1PL446488 A1PL 446488A1
Authority
PL
Poland
Prior art keywords
chips
weight
mpa
glue
adhesive mixture
Prior art date
Application number
PL446488A
Other languages
Polish (pl)
Inventor
Radosław Mirski
Joanna WALKIEWICZ
Adam Derkowski
Dorota Dziurka
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 PoznaniufiledCriticalUniwersytet Przyrodniczy W Poznaniu
Priority to PL446488ApriorityCriticalpatent/PL446488A1/en
Publication of PL446488A1publicationCriticalpatent/PL446488A1/en

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Abstract

Translated fromPolish

Sposób wytwarzania cienkich płyt wiórowych na bazie spoiwa ekologicznego i drobnych wiórów charakteryzuje się tym, że drzewne sosnowe lub świerkowe - drewno o pH 4 – 4,5, nie miej niż 4, rozdrabnia się lub prowadzi odsort wiórów do następującej struktury: pozostałości na sicie: 2,5 mm: 0% - 10%, 1,0 mm: 30% - 55%, 0,5 mm: 20% - 30%, frakcje pod sitowe: 20% - 30%, przy czym pyłu, tj. frakcje poniżej 0,315 mm, nie jest więcej niż 15%, poddaje się suszeniu do wilgotności przed naniesieniem kleju nie wyższej niż 3,0%, najkorzystniej do wilgotności od 0,5% - 2% i na tak przygotowane wióry nanosi się mieszaninę klejową w ilości od 12% do 30%, przy czym najkorzystniej jest, gdy stopień sklejenia wynosi 20% — 25% tj. suchej masy kleju do suchej masy wiórów drzewnych. Mieszaninę klejową przygotowuje się tak, że do 50% - 70% wagowych (w stosunku do objętości mieszaniny klejowej) mleka o zawartości tłuszczu 3,2%, korzystnie 60% mleka, dodaje się od 20% do 40% wagowych, korzystnie 30% wagowych mąki pszennej lub żytniej, od 1% do 13% wagowych, korzystnie od 7% do 10%, korzystnie 10% wagowych cukru i dokładnie miesza przez 3 do 5 min, homogenizuje się do uzyskania jednorodnej mieszaniny i uzyskania roztworu klejowego o zawartości suchej masy wynoszący około 20% do 40%, po czym przygotowaną mieszaninę klejową nanosi na wióry w czasie nie dłuższym niż 5 - 10 min od momentu zakończenia procesu homogenizacji, a z pokrytych klejem wiórów formuje się kobierzec, który następnie prasuje się przy ciśnieniu jednostkowym pozwalającym na uzyskanie założonej grubości płyt tj. od 2,0 — 3,5 MPa, korzystnie jednak między 2,2 MPa, a 2,8 MPa, temperaturze płyt grzejnych prasy od 180°C do 240°C, jednak korzystnie jest, gdy temperatura wynosi 200°C — 220°C i zachowaniu współczynnika prasowania tzw. faktora od 50 s/mm grubości do 75 s/mm, korzystnie jest, gdy czas prasowania wynosi 60 s/mm do uzyskania wilgotności płyty w zakresie 5% - 10%, korzystnie jednak 6% - 8%.The method of manufacturing thin particleboards based on an ecological binder and small chips is characterized in that pine or spruce wood - wood with a pH of 4 - 4.5, not less than 4, is crushed or the chips are sorted to the following structure: residue on the sieve: 2.5 mm: 0% - 10%, 1.0 mm: 30% - 55%, 0.5 mm: 20% - 30%, fractions below the sieve: 20% - 30%, wherein the dust, i.e. fractions below 0.315 mm, is not more than 15%, is dried to a moisture content of not more than 3.0% before applying the glue, most preferably to a moisture content of 0.5% - 2%, and an adhesive mixture is applied to the chips prepared in this way in an amount of 12% to 30%, and it is most advantageous when the degree of gluing is 20% - 25%, i.e. dry mass of glue to dry mass of wood chips. The adhesive mixture is prepared in such a way that to 50% - 70% by weight (in relation to the volume of the adhesive mixture) of milk with a fat content of 3.2%, preferably 60% of milk, from 20% to 40% by weight, preferably 30% by weight of wheat or rye flour, from 1% to 13% by weight, preferably from 7% to 10%, preferably 10% by weight of sugar is added and mixed thoroughly for 3 to 5 minutes, homogenized until a uniform mixture is obtained and an adhesive solution with a dry matter content of about 20% to 40% is obtained, after which the prepared adhesive mixture is applied to the chips within no more than 5 - 10 minutes from the moment of completing the homogenization process, and a mat is formed from the chips covered with glue, which is then pressed at a unit pressure allowing to obtain the intended board thickness, i.e. from 2.0 - 3.5 MPa, preferably between 2.2 MPa and 2.8 MPa, temperature of the press heating plates from 180°C to 240°C, preferably, however, 200°C - 220°C and maintaining the so-called pressing factor from 50 s/mm of thickness to 75 s/mm, preferably, the pressing time is 60 s/mm to obtain a board moisture content in the range of 5% - 10%, preferably, however, 6% - 8%.

PL446488A2023-10-252023-10-25Method of manufacturing thin chipboards based on ecological binderPL446488A1 (en)

Priority Applications (1)

Application NumberPriority DateFiling DateTitle
PL446488APL446488A1 (en)2023-10-252023-10-25Method of manufacturing thin chipboards based on ecological binder

Applications Claiming Priority (1)

Application NumberPriority DateFiling DateTitle
PL446488APL446488A1 (en)2023-10-252023-10-25Method of manufacturing thin chipboards based on ecological binder

Publications (1)

Publication NumberPublication Date
PL446488A1true PL446488A1 (en)2025-04-28

Family

ID=95554631

Family Applications (1)

Application NumberTitlePriority DateFiling Date
PL446488APL446488A1 (en)2023-10-252023-10-25Method of manufacturing thin chipboards based on ecological binder

Country Status (1)

CountryLink
PL (1)PL446488A1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
US4107379A (en)*1974-02-221978-08-15John StofkoBonding of solid lignocellulosic material
DE102004024566A1 (en)*2004-03-132005-09-29IHD Institut für Holztechnologie Dresden gGmbHWater-resistant wooden construction material, e.g. chipboard or fiberboard for furniture production, having binder comprising formaldehyde resin and modified and/or destructured cereal flour
PL432707A1 (en)*2020-01-272021-08-02Uniwersytet Przyrodniczy W PoznaniuCover boards based on lignocellulosic fibers bonded with foodstuffs
PL442188A1 (en)*2022-09-022024-03-04Uniwersytet Przyrodniczy W PoznaniuMethod of producing wet-formed chipboards based on an ecological binder

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
US4107379A (en)*1974-02-221978-08-15John StofkoBonding of solid lignocellulosic material
DE102004024566A1 (en)*2004-03-132005-09-29IHD Institut für Holztechnologie Dresden gGmbHWater-resistant wooden construction material, e.g. chipboard or fiberboard for furniture production, having binder comprising formaldehyde resin and modified and/or destructured cereal flour
PL432707A1 (en)*2020-01-272021-08-02Uniwersytet Przyrodniczy W PoznaniuCover boards based on lignocellulosic fibers bonded with foodstuffs
PL442188A1 (en)*2022-09-022024-03-04Uniwersytet Przyrodniczy W PoznaniuMethod of producing wet-formed chipboards based on an ecological binder

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