GB1502539A - Methods of making plywood - Google Patents

Methods of making plywood

Info

Publication number
GB1502539A
GB1502539A GB38202/76A GB3820276A GB1502539A GB 1502539 A GB1502539 A GB 1502539A GB 38202/76 A GB38202/76 A GB 38202/76A GB 3820276 A GB3820276 A GB 3820276A GB 1502539 A GB1502539 A GB 1502539A
Authority
GB
United Kingdom
Prior art keywords
veneer
faces
veneers
agent
core
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
GB38202/76A
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.)
MARUHI PLYWOOD KK
Original Assignee
MARUHI PLYWOOD KK
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 MARUHI PLYWOOD KK filed Critical MARUHI PLYWOOD KK
Publication of GB1502539A publication Critical patent/GB1502539A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B21/00—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board
    • B32B21/14—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board comprising wood board or veneer
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B21/00—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board
    • B32B21/04—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board comprising wood as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B21/042—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board comprising wood as the main or only constituent of a layer, which is next to another layer of the same or of a different material of wood
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J5/00—Adhesive processes in general; Adhesive processes not provided for elsewhere, e.g. relating to primers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/726—Permeability to liquids, absorption

Landscapes

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

Abstract

1502539 Forms of wood MARUHI PLYWOOD KK 15 Sept 1976 [30 July 1976] 38202/76 Heading B5L A method of temporarily bonding veneers in the making of plywood comprises coating the faces of a core veneer with a veneer bonding agent, spreading a dry powder of a material which becomes tacky as it absorbs water over the coated faces of the core veneer, assembling the coated core veneer with other veneers, and subjecting the assembly to cold pressing. The veneer bonding agent may be a thermosetting resin, such as urea resin, melamine resin, ureamelamine condensation resin or phenol resin, mixed with a hardening agent or a bridging agent, and a filler, extending agent and water may also be added. The bonding agent is applied to both faces of the core veneer which has 30% to 50% water content, the faces, immediately after the application of the bonding agent, having spread thereon the dry powder, such as wheat protein powder, wheat flour, konjak flour, carboxymethylcellulose, hydroxyethylcellulose, sodium alfinate, polyvinyl alcohol, gum arabic, quazule gum, dextrin, α-starch, etherificated starch or estrificated starch either individually or as a mixture of two or more powders. The core is assembled between a pair of surface veneers having 20% water content and subjected to a cold pressing, the water acting on the dry powder so that it becomes tacky and temporarily bonds the veneers together prior to permanent bonding which is effected by hot pressing.
GB38202/76A 1976-07-30 1976-09-15 Methods of making plywood Expired GB1502539A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP51090307A JPS603985B2 (en) 1976-07-30 1976-07-30 How to make plywood

Publications (1)

Publication Number Publication Date
GB1502539A true GB1502539A (en) 1978-03-01

Family

ID=13994874

Family Applications (1)

Application Number Title Priority Date Filing Date
GB38202/76A Expired GB1502539A (en) 1976-07-30 1976-09-15 Methods of making plywood

Country Status (3)

Country Link
JP (1) JPS603985B2 (en)
GB (1) GB1502539A (en)
PH (1) PH13579A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0378097A2 (en) * 1989-01-13 1990-07-18 Meinan Machinery Works, Inc. Substantially uncurved and unwaved plywood produced by using veneers with unstraight fibers and method for producing such a plywood

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105459221B (en) * 2015-11-26 2017-08-29 浙江升华云峰新材股份有限公司 A kind of production technology of high-grade China fir melamine ecological plate

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0378097A2 (en) * 1989-01-13 1990-07-18 Meinan Machinery Works, Inc. Substantially uncurved and unwaved plywood produced by using veneers with unstraight fibers and method for producing such a plywood
EP0378097A3 (en) * 1989-01-13 1991-08-28 Meinan Machinery Works, Inc. Substantially uncurved and unwaved plywood produced by using veneers with unstraight fibers and method for producing such a plywood

Also Published As

Publication number Publication date
PH13579A (en) 1980-07-16
JPS603985B2 (en) 1985-01-31
JPS5318709A (en) 1978-02-21

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee