PL40403B1

PL40403B1 -

Info

Publication number: PL40403B1
Application number: PL40403A
Authority: PL
Filing date: 1957-02-28
Publication date: 1957-08-15

Description

Opublikowano dnia 16 grudnia 1957 r. 3LIOTEKAJ Z^** POLSKIEJ RZECZYPOSPOLITEJ LUDOWEJ OPIS PATENTOWY Nr 40403 KI. 38 1 Inz. mgr Maciej Lairniczak Poznan, Polska Metoda laczenia drobnych odpadów drzewnych, korkowych, lykowych w plyty budowlane przy uzyciu paku wzglednie lepiku w postaci sproszkowanej Patent trwa od dnia z8 lutego 1957 r.Wynalazek dotyczy nowego bardzo prostego i oryginalnego sposobu laczenia drobnych od¬ padów drzewnych, korkowych i lykowych (tro¬ cin, wiórów, struzki poekstrakcyjnej) w plyty budowlane przy uzyciu paku wzglednie lepiku w postaci sproszkowanej.Dotychczasowe krajowe i zagraniczne meto¬ dy produkcji plyt budowlanych z trocin, wió¬ rów i innych odpadów drzewnych polegaja jia stosowaniu jako lepiszcza drogich i deiicyto^ wych zywic syntetycznych 1 klejów w postaci plynn^jrSic^ówahie zywic syntetycznych i kle¬ jów posiada te wade, ze trudno jest je równo¬ miernie naniesc na tak male elementy jakimi sa trociny i wióry.Nowy sposób laczenia drobnych odpadów drzewnych, korkowych i lykowych w plyty bu¬ dowlane przy uzyciu jako lepiszcza pakujw po-^ staci proszku polega TiaT* a) dodaniu do wiórów, trocin, struzki itp. od¬ powiedniejjrogorcji paku wzglednie lepiku w postaci proszku, b) wspólnym zmieszaniem drobnych odpadów z pakiem wzglednie lepikiem w postaci proszku, c) nasypaniu_otrzymanej mieszaniny do formy o odpowiednich wymiarach, d) sciesnianiu mieszaniny w prasie do wyma¬ ganej grubosci, e) ogrzaniu sciesnianej mieszaniny do tempe¬ ratury odpowiaa!ajacej temperaturze topnie¬ nia lepiszcza, f) ochlodzeniu uzyskanej w powyzszy sposób plyty do temperatury pokojowej. PLPublished on December 16, 1957. 3LIOTEKAJ Z ^ ** POLSKIEJ RZECZYPOSPOLITEJ PEOPLEJ PATENT DESCRIPTION No. 40403 KI. 38 1 Inz. Maciej Lairniczak Poznan, MSc, Poland Method of joining small wood, cork and sapwood wastes into construction boards using pitch or mastic in powdered form The patent has been in force since February 8, 1957 The invention concerns a new, very simple and original method of joining small wood wastes, cork and lye (sawdust, shavings, post-extraction stream) into building boards using pitch or sticky powder. Previous domestic and foreign methods of producing building boards from sawdust, shavings and other wood waste consist of using it as a binder expensive and deicitic synthetic resins and adhesives in the form of liquid resins and adhesives have the disadvantage that it is difficult to evenly apply them to such small elements as sawdust and chips. A new method of joining small wood waste. , cork and lyocells in building boards when used as a packing binder in the form of a powder consists of TiA for shavings, sawdust, shavings, etc., appropriate pitch or sticky powder, b) joint mixing of fine wastes with pitch or powder sticky, c) pouring the mixture into a mold of appropriate dimensions, d) sludging the mixture in a Desired thickness, e) heating the slurried mixture to a temperature corresponding to the melting point of the binder, and f) cooling the plate obtained in the above manner to room temperature. PL

Claims

1. Claims 1. A method of joining fine wood, cork and lye waste into building boards using pitch or sticky powder, characterized in that the binder is added to the fine waste in the form of a powder in an amount corresponding to a weight of 10 - 30 ° / o of the weight of the ^ mass of trees- n ^, ^ a ^ 'then undergo "exact £ 4 * tf © mixing together. * (\ <Wt

2. The method according to claim The process of claim 1, characterized in that the obtained mixture of sawdust, shavings, etc. and powdered binder are placed in the respective molds and compressed at a pressure of more than 10 kg / cm2.

3. The method according to p. The method of claim 1, 2, characterized in that the previously fermented mixture of fine waste and binder is heated together to the melting point of the tacky for a period of 5-10 minutes per cm of the board thickness, and it is gradually cooled to room temperature. . '' '; t' / * i / Vr "

4. The method according to p. The method according to any one of claims 1, 2, 3, characterized in that in order to shorten the time necessary for overheating of the thinned layer of fine waste, the previously prepared mixture of fine waste and binders must be heated to a temperature corresponding to the softening temperature of the binder. Preheating of the mixture of fine waste and binder reduces the heating time under pressure to one-quarter.

5. A method according to claim 1, 2, 3, 4, characterized in that the panels obtained in this way can be further glued into structures using pitch binder and all kinds of synthetic resins and wood-binding adhesives.

6. The method according to p. 1, 2, 3, 4, 5, characterized in that in the case of an attempt to obtain a porous plate, a pitch binder with a granulation corresponding to the required pore size is used, because the binder changes from a solid to a liquid under the influence of heating. , saturates small waste and binds it together as it cools down, leaving pores of the appropriate size *

7. The method according to p. 1, 2, 3, 4, 5, 6, characterized in that in order to increase the softening temperature of the binder, thus the board, it is necessary to add a small percentage of elemental sulfur in the form of a powder to the mixture of fine waste and binder. Sulfur, showing a "vulcanizing" effect, reduces the hygroscopicity of the panels.

8. The method according to p. 1, 2, 3, 4, 5, 6, 7f, characterized by the fact that in order to prevent the boards from moistening, they should be covered with a thin layer of pitch by short-term immersion in liquid pitch at a temperature of about 150 ° C.

9. The method according to p. 1, 2, 3, 4, 5, 6, 7, 8, characterized in that to reduce the flammability of the boards, a mixture of fine wood waste and powdered pitch should be added with a certain amount of fireproofing salts (borax, diammonium phosphate) , potassium, ammonium and alumas). Inz. Maciej Lawniczak, MSc iNMp *. 2067 - 100 PL