NO118461B - - Google Patents
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- Publication number
- NO118461B NO118461B NO16931467A NO16931467A NO118461B NO 118461 B NO118461 B NO 118461B NO 16931467 A NO16931467 A NO 16931467A NO 16931467 A NO16931467 A NO 16931467A NO 118461 B NO118461 B NO 118461B
- Authority
- NO
- Norway
- Prior art keywords
- water
- dry matter
- water content
- dried
- hardener
- Prior art date
Links
- 239000000463 material Substances 0.000 claims description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 21
- 239000002023 wood Substances 0.000 claims description 12
- 239000003292 glue Substances 0.000 claims description 9
- 238000004026 adhesive bonding Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 8
- 239000000853 adhesive Substances 0.000 claims description 7
- 230000001070 adhesive effect Effects 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 5
- 239000004848 polyfunctional curative Substances 0.000 claims description 5
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 4
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 229920001807 Urea-formaldehyde Polymers 0.000 claims description 2
- 239000002313 adhesive film Substances 0.000 claims description 2
- 235000013877 carbamide Nutrition 0.000 claims description 2
- 239000004202 carbamide Substances 0.000 claims description 2
- ODGAOXROABLFNM-UHFFFAOYSA-N polynoxylin Chemical compound O=C.NC(N)=O ODGAOXROABLFNM-UHFFFAOYSA-N 0.000 claims description 2
- 239000003054 catalyst Substances 0.000 description 5
- 238000001035 drying Methods 0.000 description 4
- 239000012528 membrane Substances 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- 229920000877 Melamine resin Polymers 0.000 description 2
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000003287 bathing Methods 0.000 description 1
- 239000011093 chipboard Substances 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000005871 repellent Substances 0.000 description 1
- 239000011265 semifinished product Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
- C08J9/10—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing nitrogen, the blowing agent being a compound containing a nitrogen-to-nitrogen bond
- C08J9/101—Agents modifying the decomposition temperature
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
- C08J9/10—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing nitrogen, the blowing agent being a compound containing a nitrogen-to-nitrogen bond
- C08J9/102—Azo-compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/09—Carboxylic acids; Metal salts thereof; Anhydrides thereof
- C08K5/098—Metal salts of carboxylic acids
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2383/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen, or carbon only; Derivatives of such polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2383/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen, or carbon only; Derivatives of such polymers
- C08J2383/04—Polysiloxanes
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
Description
Framgangsmåte for ved liming av trematerialer å fremstille et lagringsdyktig materiale som senere kan forenes ved sammenpressing under varmetilforsel. Procedure for gluing wooden materials to produce a storable material which can later be joined by compression under heat.
Den hittil alminnelige framgangsmåte ved The hitherto general procedure by
liming av trematerialer, særlig finér, spon og gluing of wood materials, especially veneer, chips and
liknende med karbamidlim (ureaformaldehyd) similar to carbamide glue (urea formaldehyde)
for å fremstille produkter med særlige krav til to produce products with special requirements
dimensjonal stabilitet og våtstyrke, går ut på dimensional stability and wet strength
å tilsette en katalysator som reagerer slik at to add a catalyst that reacts so that
limet herdner. Oppløsningen består vanligvis the glue hardens. The resolution usually persists
av 70 % tørrstoff og resten vann og påføres of 70% dry matter and the rest water and applied
trematerialene i en mengde på ca. 200 g/m-ved finér ved spon, flis og liknende i mindre the wood materials in a quantity of approx. 200 g/m wood veneer for chips, chips and similar in smaller sizes
mengder, dog med samme tørrstoffinnhold. quantities, although with the same dry matter content.
Oppfinnelsen tar sikte på en framgangsmåte for ved liming av trematerialer å fremstille et lagringsdyktig materiale som senere The invention aims at a method for gluing wooden materials to produce a storable material which later
kan forenes ved sammenpressing under varmetilforsel, og hensikten er særlig å spare can be united by compression under heat, and the purpose is particularly to save
tørrstoff, tilveiebringe et halvfabrikat som dry matter, provide a semi-finished product which
kan lagres i lengere tid og unngå blæredan-nelser selv ved høye temperaturer under pressingen, dessuten å rydde av veien den gamle can be stored for a longer period of time and avoid blistering even at high temperatures during pressing, also clearing the way of the old
skrekk for vann i forbindelse med liming. fear of water in connection with gluing.
Oppfinnelsen finner anvendelse ved finér som The invention finds application in veneers such as
belegges helt på den ene eller begge sider, be completely coated on one or both sides,
ved spon, flis og liknende som belegges helt in the case of shavings, chips and the like that are completely coated
ved neddypning for lengre eller kortere lagring og senere fremstilling av sponplater, when dipping for longer or shorter storage and subsequent production of chipboards,
eller bord som skal limes sammen til sperre-plater eller lignende. or boards that are to be glued together to form interlocking boards or the like.
Oppfinnelsen utmerker seg ved at trematerialet tørkes ned til under 8 % vanninnhold The invention is distinguished by the fact that the wood material is dried down to less than 8% water content
og derefter bades i en limblanding bestående and then bathed in a glue mixture consisting of
av 25—45 % tørrstoff og herder og 75—55 % of 25-45% dry matter and hardener and 75-55%
vann, hvorefter trematerialet tas opp av badet og limhinnen tørkes ved moderat varme water, after which the wooden material is taken up by the bath and the glue membrane is dried at moderate heat
(40—60° C). (40-60° C).
Trematerialet tørkes fortrinnsvis ned til The wood material is preferably dried down to
5 % vanninnhold eller mindre. Tørrstoff-herder-innholdet utgjør hensiktsmessig 30—40 5% water content or less. The dry matter-hardener content is suitably 30-40
%. Sammenlimingen foregår fortrinnsvis under trykk ved en temperatur på 120—140° C. %. The gluing takes place preferably under pressure at a temperature of 120-140°C.
Limblandingen tilsettes på kjent måte mel-lamin som limforsterker og i limoppløsninger som vanligvis leveres fra limprodusenten med 70 % tørrstoff. Dessuten tilsettes katalysator. Den nye fremgangsmåte forlanger ikke noen ekstra katalysator tilsatt. The adhesive mixture is added in a known manner to melamine as an adhesive strengthener and in adhesive solutions which are usually supplied by the adhesive manufacturer with 70% solids. Catalyst is also added. The new method does not require any additional catalyst to be added.
Da melaminen som i dette tilfelle virker som katalysator, reagerer ved ca. 120° C, er det viktig at limhinnen, som nevnt, tørkes ved moderat varme, dvs. 50—60° C. Ved en for høy tørketemperatur ville katalysatoren bli ødelagt og dermed det limte materiales lag-ringsevne nedsatt eller ødelagt. As the melamine, which in this case acts as a catalyst, reacts at approx. 120° C, it is important that, as mentioned, the adhesive membrane is dried at moderate heat, i.e. 50-60° C. If the drying temperature is too high, the catalyst would be destroyed and thus the storage capacity of the glued material reduced or destroyed.
Det som muliggjør anvendelsen av frem-gangsmåten er først og fremst at man ved å tørke trematerialet ned til 5 % vanninnhold eller mindre, oppnår at limmolekyler av forskjellig størrelse under neddypingen i den vannholdige limblanding vil opptre som ven-tildeler og derved delvis hindre rask oppsug-ning. I samme retning bidrar også den ned-satte overflatespenning av det resterende vanninnhold på 5 %. Som kjent vil en våt gjenstand ved å berøre en vannflate, trekke denne opp mot seg, idet vannoverflaten og vanninnholdet i gjenstanden sammen danner en ny overflatehinne. Ved et vanninnhold på ca. 5 % vil overflatehinen av gjenstanden nærmest blir vannfrastøtende. Derved hindres limet i å bli absorbert i gjenstanden og danner i stedet en limhinne. What enables the application of the method is primarily that by drying the wood material down to 5% water content or less, it is achieved that glue molecules of different sizes during immersion in the water-containing glue mixture will act as ven-allocators and thereby partially prevent rapid absorption -thing. The reduced surface tension of the remaining water content of 5% also contributes in the same direction. As is well known, a wet object touching a surface of water will pull it towards itself, the water surface and the water content in the object together forming a new surface membrane. At a water content of approx. 5%, the surface layer of the object will become almost water-repellent. This prevents the glue from being absorbed into the object and instead forms an adhesive film.
Forøvrig har trematerialets vanninnhold Furthermore, the water content of the wood material has
stor betydning for det ferdige produkts «spen-stighet», idet et for lavt vanninnhold (vesentlig under 5 %) gir et dødt og sprøtt materiale. Ideelt for spenstigheten synes et vanninn- great importance for the "resilience" of the finished product, as too low a water content (significantly below 5%) results in a dead and brittle material. Ideal for resilience seems to be a water
hold på nær under 5 % å være. Ved et vanninnhold på vesentlig over 5 % vil materialet ha tendens til å arbeide for meget, samtidig som limblandingen under påføringen (f. eks. ved bading, påsprøyting eller liknende) vil suges inn i trematerialet og medføre dårlig bindeevne. Det vesentlige ved oppfinnelsen går altså ut på at ved å velge vanninnholdet i trematerialet kan få forsynt dette med en overflate-limhinne som kan tørkes, og mulig-gjør lagring av det limte materiale. stay close to below 5%. With a water content of significantly more than 5%, the material will tend to work too much, while the glue mixture during application (e.g. when bathing, spraying or similar) will be absorbed into the wood material and cause poor bonding. The essential thing about the invention is therefore that by choosing the water content in the wood material, it can be provided with a surface adhesive membrane that can be dried, and enables storage of the glued material.
En fordel som oppfinnelsen også bringer med seg, er at man under pressingen får mindre vann å kjempe med og dermed øker mu-ligheten for optimale limforhold. An advantage that the invention also brings with it is that during pressing you have less water to contend with, thus increasing the possibility of optimal gluing conditions.
Tørkingen av det limte materiale kan f. eks. foregå i trommeltørker eller i tørkekanal med transportbånd under tilførsel av moderat opp-varmt luft. Fra transportbåndet kan det limte tremateriale overføres direkte i lagringssilo. The drying of the glued material can e.g. take place in a drum dryer or in a drying channel with a conveyor belt under the supply of moderately heated air. From the conveyor belt, the glued wood material can be transferred directly into the storage silo.
Claims (3)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US57377966A | 1966-08-22 | 1966-08-22 |
Publications (1)
Publication Number | Publication Date |
---|---|
NO118461B true NO118461B (en) | 1969-12-29 |
Family
ID=24293365
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO16931467A NO118461B (en) | 1966-08-22 | 1967-08-09 |
Country Status (9)
Country | Link |
---|---|
JP (1) | JPS548700B1 (en) |
BE (1) | BE702362A (en) |
CH (1) | CH487969A (en) |
DE (1) | DE1694975C3 (en) |
GB (1) | GB1130674A (en) |
IL (1) | IL28355A (en) |
NL (1) | NL155572B (en) |
NO (1) | NO118461B (en) |
SE (1) | SE348213B (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4026846A (en) * | 1975-07-03 | 1977-05-31 | Dow Corning Corporation | Silicone rubber sponge composition, method of making the sponge |
GB2217868A (en) * | 1988-04-06 | 1989-11-01 | Synthetic Technology Limited | Fibre optic cables |
JPH064716B2 (en) * | 1989-05-25 | 1994-01-19 | 信越化学工業株式会社 | Foamable silicone composition, silicone sponge and silicone sponge roll |
DE4235309A1 (en) * | 1992-10-20 | 1994-04-21 | Wacker Chemie Gmbh | Blowing agent compositions and compositions curable to form elastomeric silicone foams |
-
1967
- 1967-07-19 IL IL2835567A patent/IL28355A/en unknown
- 1967-07-21 GB GB3361567A patent/GB1130674A/en not_active Expired
- 1967-08-07 BE BE702362D patent/BE702362A/xx unknown
- 1967-08-09 NO NO16931467A patent/NO118461B/no unknown
- 1967-08-17 DE DE19671694975 patent/DE1694975C3/en not_active Expired
- 1967-08-21 SE SE1169567A patent/SE348213B/xx unknown
- 1967-08-21 NL NL6711490A patent/NL155572B/en unknown
- 1967-08-22 JP JP5355867A patent/JPS548700B1/ja active Pending
- 1967-08-22 CH CH1176767A patent/CH487969A/en unknown
Also Published As
Publication number | Publication date |
---|---|
DE1694975A1 (en) | 1971-12-09 |
SE348213B (en) | 1972-08-28 |
BE702362A (en) | 1968-02-07 |
GB1130674A (en) | 1968-10-16 |
NL155572B (en) | 1978-01-16 |
NL6711490A (en) | 1968-02-23 |
CH487969A (en) | 1970-03-31 |
JPS548700B1 (en) | 1979-04-18 |
DE1694975C3 (en) | 1975-03-13 |
DE1694975B2 (en) | 1974-07-04 |
IL28355A (en) | 1970-11-30 |
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