SE8105529L - SET TO REDUCE EMISSION OF FORMALDEHYD FROM CARBAMID HEART BOND SPAN - Google Patents

SET TO REDUCE EMISSION OF FORMALDEHYD FROM CARBAMID HEART BOND SPAN

Info

Publication number
SE8105529L
SE8105529L SE8105529A SE8105529A SE8105529L SE 8105529 L SE8105529 L SE 8105529L SE 8105529 A SE8105529 A SE 8105529A SE 8105529 A SE8105529 A SE 8105529A SE 8105529 L SE8105529 L SE 8105529L
Authority
SE
Sweden
Prior art keywords
carbamid
formaldehyd
span
heart
bond
Prior art date
Application number
SE8105529A
Other languages
Swedish (sv)
Other versions
SE436329B (en
Inventor
A W Westling
Original Assignee
Swedspan Ab
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 Swedspan Ab filed Critical Swedspan Ab
Priority to SE8105529A priority Critical patent/SE436329B/en
Publication of SE8105529L publication Critical patent/SE8105529L/en
Publication of SE436329B publication Critical patent/SE436329B/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N1/00—Pretreatment of moulding material
    • B27N1/003—Pretreatment of moulding material for reducing formaldehyde gas emission

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Dry Formation Of Fiberboard And The Like (AREA)
  • Phenolic Resins Or Amino Resins (AREA)
  • Treatments Of Macromolecular Shaped Articles (AREA)
  • Preparation Of Compounds By Using Micro-Organisms (AREA)

Abstract

A method of reducing emissions of formaldehyde from carbamide resin shavings by covering the shavings, after pressing, with a solution of ammonium carbonate and/or ammonium hydrogen carbonate, and possibly urea, and the stacking of the shavings treated in this way for maturing in storage. According to the invention, the application of the solution of ammonium carbonate and/or ammonium hydrogen carbonate, and possibly urea, is only carried out when the shavings have attained a temperature of around 10 - 35 degrees C, preferably 20 - 30 degrees C.
SE8105529A 1981-09-18 1981-09-18 Method to reduce emissions of formaldehyde from carbamide resin bound chipboards SE436329B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SE8105529A SE436329B (en) 1981-09-18 1981-09-18 Method to reduce emissions of formaldehyde from carbamide resin bound chipboards

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8105529A SE436329B (en) 1981-09-18 1981-09-18 Method to reduce emissions of formaldehyde from carbamide resin bound chipboards

Publications (2)

Publication Number Publication Date
SE8105529L true SE8105529L (en) 1983-03-19
SE436329B SE436329B (en) 1984-12-03

Family

ID=20344578

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8105529A SE436329B (en) 1981-09-18 1981-09-18 Method to reduce emissions of formaldehyde from carbamide resin bound chipboards

Country Status (1)

Country Link
SE (1) SE436329B (en)

Also Published As

Publication number Publication date
SE436329B (en) 1984-12-03

Similar Documents

Publication Publication Date Title
SE7904708L (en) WAY TO MAKE A CELLULOSIZED MATERIAL FLAMMABLE
ATE3389T1 (en) PRODUCTION OF WOOD CHIPBOARDS.
EP0173342A3 (en) Method for assembling wood elements and assembly of wood elements
ATE21350T1 (en) PROCESS FOR THE MANUFACTURE OF PLASTIC WOOD MATERIALS WITH REDUCED FORMALDEHYDE EMISSION.
SE8105529L (en) SET TO REDUCE EMISSION OF FORMALDEHYD FROM CARBAMID HEART BOND SPAN
ZA795720B (en) Method of flameproofing wood with inorganic ammonium salts and dicyandiamide/formaldehyde reaction products
SE8306276L (en) GLUE
ES8106437A1 (en) A method of reducing the emission of formaldehyde from particle board bound with carbamide resin.
ATE6067T1 (en) PROCESS FOR PRODUCTION OF PHOSPHONOHYDROXYACETONITRILE.
EP0144985A3 (en) Method of decreasing the formaldehyde emission of veneered chip and fibre boards
FI871548A (en) FOERFARANDE FOER FRAMSTAELLNING AV VAEXTFIBERBASERADE SKIVOR, SPECIELLT AV SPAONSKIVOR ELLER FIBERSKIVOR.
GB762471A (en) Improvements in bonding processes using urea-formaldehyde resin glues
SE8000664L (en) SET TO REDUCE THE EMISSION OF FORMALDEHYD FROM CARBAMID HEART BOND SPAN
NO833499L (en) PROCEDURE FOR THE PREPARATION OF THE FORMAL HEAD AND THE CATALYST FOR USING THE PROCEDURE
ATE27963T1 (en) METHOD OF GLUING SOLID WOOD AND GLUE RESIN CONTAINING POLYSACCHARIDES.
FR2277669A1 (en) Flame resistant chipboard - mfd. by spraying chips with boron cpd.-acid, drying, adding resin binder, and pressing-heating
JPS57185136A (en) Manufacture of particle board
ATE8986T1 (en) PROCESS FOR PRODUCTION OF FORMALDEHYDE.
BG36500A3 (en) Catalyst for polycondensation of aminoresins
SE8205606D0 (en) SET AND COMPOSITION FOR SMOKING GENERATION
GB1500599A (en) Compositions for imparting fire retardance to wood
GB1045113A (en) Method of producing fire resisting wooden boards or panels
JPS5774376A (en) Adhesive wood and bonding method of wood
JPS5329394A (en) Melamine resin composition
RO100899A2 (en) Adhesive compound meant to veneering wood surfaces or wood prefabs

Legal Events

Date Code Title Description
NAL Patent in force

Ref document number: 8105529-5

Format of ref document f/p: F

NUG Patent has lapsed

Ref document number: 8105529-5

Format of ref document f/p: F