ES306409A1 - Production of laminated sheet material - Google Patents

Production of laminated sheet material

Info

Publication number
ES306409A1
ES306409A1 ES0306409A ES306409A ES306409A1 ES 306409 A1 ES306409 A1 ES 306409A1 ES 0306409 A ES0306409 A ES 0306409A ES 306409 A ES306409 A ES 306409A ES 306409 A1 ES306409 A1 ES 306409A1
Authority
ES
Spain
Prior art keywords
liquid
resinous
component
phenol
solid
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
ES0306409A
Other languages
Spanish (es)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Leicester Lovell and Co Ltd
Original Assignee
Leicester Lovell and Co Ltd
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 Leicester Lovell and Co Ltd filed Critical Leicester Lovell and Co Ltd
Publication of ES306409A1 publication Critical patent/ES306409A1/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B27WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27GACCESSORY MACHINES OR APPARATUS FOR WORKING WOOD OR SIMILAR MATERIALS; TOOLS FOR WORKING WOOD OR SIMILAR MATERIALS; SAFETY DEVICES FOR WOOD WORKING MACHINES OR TOOLS
    • B27G11/00Applying adhesives or glue to surfaces of wood to be joined

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Veneer Processing And Manufacture Of Plywood (AREA)
  • Laminated Bodies (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)

Abstract

A method for the production of laminated sheet material, such as plywood, comprises applying separately and successively to one or both of the surfaces to be bonded first a liquid resinous component and secondly a comminuted, fusible solid resinous or potentially resinous component, bringing the surfaces to be bonded together, and curing the resinous material of the combined coating under heat and pressure, both the liquid and solid components being potentially thermosetting at least in the presence of one another. The term " liquid resinous component " covers a condensation product of an aldehyde with urea or thiourea, or with a phenol which is unsubstituted in those portions of the ring which are reactive towards formaldehyde, such phenols being phenol, metacresol, 3.5-xylenol and resorcinol. The term " solid resinous component " covers products which are resinous or become resinous when heated or upon reaction with one or more of the ingredients of the liquid resinous component and are thermosetting when heated alone or in conjunction with the liquid component, e.g. condensation products of aldehyde with urea, melamine or thiourea, phenol, meta-cresol, 3.5-xylenol and resorcinol which are solid at room temperature. Preferably, both liquid and solid components are condensation products of phenol with formaldehyde, the phenol being of the resole type produced by 1 mol. of phenol with 1 mol. of aldehyde under alkaline conditions, or of the novolak type. When phenolic novolak resin or tannin extracts, such as mimosa, quebracho and wattle bark powders, are used as the powdered component, an aldehyde donor, such as hexamine or paraformaldehyde may be incorporated. In operation, the sheet material, such as wood veneer, is conveyed past a station whereat a film of the liquid resinous component is deposited by brushing, rolling, spraying or by a curtain coater in which the liquid is fed through a slot of adjustable width. The sheets are then conveyed past a second station whereat the solid resinous component is deposited by brushing, spraying or by a second curtain coater having a vibrator. If the solid component is sprayed, the particles may be electrostatically charged. Thereafter the sheets are assembled to form a laminate with the grains in adjacent veneers at right-angles and the assembly lightly pressed for 30 minutes before being placed in a press at a temperature of 115 C. and a pressure of 200 lb. per square inch for 6 minutes. The Specification includes a number of examples giving the quantities of constituents used in the liquid and solid components.
ES0306409A 1963-11-25 1964-11-25 Production of laminated sheet material Expired ES306409A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4653563A GB1092909A (en) 1963-11-25 1963-11-25 Production of laminated sheet material

Publications (1)

Publication Number Publication Date
ES306409A1 true ES306409A1 (en) 1965-04-16

Family

ID=10441631

Family Applications (1)

Application Number Title Priority Date Filing Date
ES0306409A Expired ES306409A1 (en) 1963-11-25 1964-11-25 Production of laminated sheet material

Country Status (6)

Country Link
DE (1) DE1594085A1 (en)
ES (1) ES306409A1 (en)
GB (1) GB1092909A (en)
IL (1) IL22474A (en)
MY (1) MY7000145A (en)
NL (1) NL6413720A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0931822A1 (en) * 1998-01-23 1999-07-28 Akzo Nobel N.V. A method for joining together two surfaces
US7664607B2 (en) 2005-10-04 2010-02-16 Teledyne Technologies Incorporated Pre-calibrated gas sensor
CN104802277B (en) * 2014-11-20 2016-11-09 东华大学 A kind of Corchorus olitorius L. strengthens the preparation method of tannic extract resin medium density fibre board (MDF)

Also Published As

Publication number Publication date
NL6413720A (en) 1965-05-26
IL22474A (en) 1968-02-26
MY7000145A (en) 1970-12-31
DE1594085A1 (en) 1969-08-21
GB1092909A (en) 1967-11-29

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