CN104742200A - Veneering method - Google Patents
Veneering method Download PDFInfo
- Publication number
- CN104742200A CN104742200A CN201310756191.XA CN201310756191A CN104742200A CN 104742200 A CN104742200 A CN 104742200A CN 201310756191 A CN201310756191 A CN 201310756191A CN 104742200 A CN104742200 A CN 104742200A
- Authority
- CN
- China
- Prior art keywords
- hot melt
- thermoplastic film
- melt glue
- veneering
- board
- 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.)
- Pending
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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
Abstract
The invention relates to the technical field of plywood production and discloses a veneering method. Hot melt glue is added to a board and a plastic interface by uniformly spraying molten hot melt glue onto the surface of a thermoplastic film to make a premade composite film after the hot melt glue and the thermoplastic film are fused; the premade composite film is laid between to-be-veneered board surfaces, molten in hot pressing and pressed into a gap of the boards under the action of pressure, the hot melt glue gets close to and contact with the boards to infiltrate the boards, then the thermoplastic film fills the gap, and the upper board, the plastic and the lower board are sequentially firmly veneered after cooling and solidification are finished. Composite-structure plywood produced according to the veneering method has the advantages of high veneering strength, excellent mechanical property, simplicity in manufacturing, low cost and environment friendliness.
Description
Technical field
The present invention relates to artificial plywood and production method thereof that plank offset plate closes production technical field, particularly a kind of novel environment friendly composite construction.
Background technology
Have a large amount of glued board adopting liquid adhesive to prepare both at home and abroad, there is free formaldehyde in its product, contaminated environment.Applied film makees adhesive early has application, it without solvent so environmental protection.
Application number: the Chinese patent of 00134681.4 production process of environmental protection type veneer board proposes application thermoplastic film and replaces the adhesive such as urea aldehyde and phenolic aldehyde to realize producing aldehyde-free by wood, this gluing method by thermoplastic under heat hot melting plastic embed timber gap be main, and by plastics infiltration infiltrate timber produce gummed power very limited.So the film glued easily is stripped.
In order to improve bonding strength application number be: the Chinese patent 200410011645.1 wood chips being furnished with the glued board of pin hole proposes to roll pin hole in veneering face.Although roll pin hole can improve gummed power, that also just increases part pining force.Will increase acanthopore difficulty when producing glued board, acanthopore destroys wood structure simultaneously.
Summary of the invention
The mode that above-mentioned two patents mainly embed wood material with thermoplastic produces gummed power, and plank and plastic interface produce the gummed power deficiency of permeating and infiltrating.The present invention adds PUR at plank and plastic interface, and Adding Way is that the PUR of fusing is uniformly coated on thermoplastic film surface and makes it fuse, obtained prefabricated composite membrane.Then between the wood plate surface needing gummed, prefabricated composite membrane is laid, prefabricated composite membrane fusing during hot pressing, be pressed into plank gap under the effect of the pressure simultaneously, PUR first close with wood material, contact, permeate, infiltrate timber, thermoplastic and then enters and fills up gap, above plank and plastics, plastics and plank is glued together firmly below after cooling curing.
To achieve these goals, technical scheme of the present invention is: a kind of veneering method, comprise promise dry plate plank, the thermoplastic film of surperficial applying hot melt adhesives is provided with between plank, it is characterized in that: the prefabricated bad group of compound of thermoplastic film's composition of plank and surperficial applying hot melt adhesives, it is heated, pressurization, cooling, arranges sizing and makes finished product.
Beneficial effect of the present invention is the production method providing a kind of composite structure plywood, and adopt the method production composite structure plywood, not only bonding strength is high, and mechanical property is good, and manufacture process is simple, cost is low, environmental protection.
Detailed description of the invention
Plank described in this programme is that sawing in glued board industry, the dry moisture of rotary-cut or truncation are at the plank of 5%-8% or veneer.
The thermoplastic of thermoplastic film's indication of surperficial applying hot melt adhesives described in this programme is polyethylene, polyvinyl chloride, polypropylene.PUR is EVA, be a kind ofly do not need solvent, heating uniform temperature becomes and can flow and the sticking liquid of tool, during solidification, stationarity is good, resistant slide, the glue that adhesive strength is high.
Described in this programme, the thermoplastic film of surperficial applying hot melt adhesives has been coated with by PUR laminating machine.Thermoplastic film's thickness 30 ~ 150 grams/m, PUR one side coating weight 10 ~ 30 grams/m.
Between adjacent plank or veneer, the thermoplastic film of laid surperficial applying hot melt adhesives forms slab group, base group is sent into hot press and carries out hot pressing, hot pressing temperature is 160 ~ 190 DEG C, and hot pressing pressure is 1. ~ 3.0MPa, hot pressing time is determined depending on thickness of compressive plate, is generally 1 ~ 3min/mm.Enter cold press after hot pressing to cold pressing at once, wait for that plate temperature goes out cold press when dropping to 60 DEG C.Then display, cutting edge, arrangement sizing make finished product.
Claims (1)
1. a veneering method, comprise promise dry plate plank, the thermoplastic film of surperficial applying hot melt adhesives is provided with between plank, it is characterized in that: the thermoplastic film of plank and surperficial applying hot melt adhesives forms compound prefabricated blank group, it is heated, pressurization, cooling, arranges sizing and makes finished product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310756191.XA CN104742200A (en) | 2013-12-27 | 2013-12-27 | Veneering method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310756191.XA CN104742200A (en) | 2013-12-27 | 2013-12-27 | Veneering method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104742200A true CN104742200A (en) | 2015-07-01 |
Family
ID=53582739
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310756191.XA Pending CN104742200A (en) | 2013-12-27 | 2013-12-27 | Veneering method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104742200A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107662252A (en) * | 2016-12-30 | 2018-02-06 | 北京林业大学 | A kind of manufacture method of wood single-plate plastics composite inner wall decorative panel |
| CN114347194A (en) * | 2021-12-27 | 2022-04-15 | 广东泰扬木业科技有限公司 | Aldehyde-free PE hot melt adhesive membrane manufacturing process |
-
2013
- 2013-12-27 CN CN201310756191.XA patent/CN104742200A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107662252A (en) * | 2016-12-30 | 2018-02-06 | 北京林业大学 | A kind of manufacture method of wood single-plate plastics composite inner wall decorative panel |
| CN114347194A (en) * | 2021-12-27 | 2022-04-15 | 广东泰扬木业科技有限公司 | Aldehyde-free PE hot melt adhesive membrane manufacturing process |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150701 |