GB697746A - Improvements relating to the manufacture of plywood - Google Patents

Improvements relating to the manufacture of plywood

Info

Publication number
GB697746A
GB697746A GB2769/51A GB276951A GB697746A GB 697746 A GB697746 A GB 697746A GB 2769/51 A GB2769/51 A GB 2769/51A GB 276951 A GB276951 A GB 276951A GB 697746 A GB697746 A GB 697746A
Authority
GB
United Kingdom
Prior art keywords
per cent
veneers
solution
plywood
adhesive
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
GB2769/51A
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.)
LEW GUREWICZ
Original Assignee
LEW GUREWICZ
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 LEW GUREWICZ filed Critical LEW GUREWICZ
Publication of GB697746A publication Critical patent/GB697746A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27D—WORKING VENEER OR PLYWOOD
    • B27D1/00—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring
    • B27D1/04—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring to produce plywood or articles made therefrom; Plywood sheets

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Veneer Processing And Manufacture Of Plywood (AREA)

Abstract

697,746. Plywood. MARSHALL, J., and GUREWICZ, L. Feb. 5, 1951 [Feb. 13, 1950], No. 2769/51. Class 145 (ii). Plywood is made by heating the veneers in a wet state (having not less than 30 per cent water content) with a prebonding solution which includes an adhesive promoter containing formaldehyde, removing any excess of the solution from the surface of the veneers and coating them whilst still in a wet state, with an adhesive that is compatable with the solution, superimposing the veneers and cold-bonding them under pressure, the promoter being capable of causing the adhesive to jell sufficiently rapidly to avoid excessive dilution by the moisture in the veneers. Both hardwood and softwood may be used. The veneer is cut from the log which has preferably previously been steamed or boiled to soften it. An alkali metal salt and one or more polyhydric alcohols may be added to the prebonding solution. From 0.3 percent to 1.5 per cent, even 2 per cent to 3 per cent of commercial formaldehyde (40 per cent) may be used. Sodium silicate, borate, oxalate or carbonate may be used as the alkali metal salt. Casein adhesives devoid of formaldehyde are commonly used. Examples are given.
GB2769/51A 1950-02-13 1951-02-05 Improvements relating to the manufacture of plywood Expired GB697746A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU697746X 1950-02-13
DEM8502A DE869260C (en) 1950-02-13 1951-02-09 Method of making plywood

Publications (1)

Publication Number Publication Date
GB697746A true GB697746A (en) 1953-09-30

Family

ID=25636034

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2769/51A Expired GB697746A (en) 1950-02-13 1951-02-05 Improvements relating to the manufacture of plywood

Country Status (2)

Country Link
DE (1) DE869260C (en)
GB (1) GB697746A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1986001142A1 (en) * 1984-08-17 1986-02-27 Kallenmäki Oy A method of fixing a wooden sheet of veneer to a supporting lamina

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007006123A1 (en) * 2007-02-02 2008-08-07 Nützel, Bernd Box girder, has bars connecting upper belt and lower belt, running in longitudinal direction of carrier and arranged between belts, and contacting or colliding parts pasted with each other

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1986001142A1 (en) * 1984-08-17 1986-02-27 Kallenmäki Oy A method of fixing a wooden sheet of veneer to a supporting lamina

Also Published As

Publication number Publication date
DE869260C (en) 1953-03-02

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