TWI267443B - Manufacturing method for plywood - Google Patents

Abstract

A manufacturing method for plywood comprises the steps of recycling or preparing at least one thermoplastically polymeric resin; heating the thermoplastically polymeric resin to form a thermoplastically polymeric resin layer; adhering the thermoplastically polymeric resin layer to at least one surface of a ply made of wood by heating to integrate into a reinforced ply unit; and, laminating at least two of the reinforced ply units to constitute a plywood. Alternatively, the thermoplastically polymeric resin can be directly coated on the ply by heating to form the thermoplastically polymeric resin layer on the ply so as to integrate into the reinforced ply unit.

Description

1267443 - IX. Description of the Invention: [Technical Field of the Invention] - The present invention relates to a method for manufacturing a composite sheet, in particular to recycling various thermoplastic polymer resin raw materials to be combined with a wood sheet to form a unit plate body, A method of manufacturing a composite sheet that increases water repellency and manufacturing yield. [Prior Art] For the manufacturing method of φ conventional composite sheet, please refer to the drawings 1A to 1G, which mainly includes the following steps: as shown in Fig. 1A, a log 90 is cut into a fixed length; as shown in Fig. 1B , the log 90 is cut into a wood sheet 91; as shown in FIG. 1C, the wood sheet 91 is cut into 3 fixed length and width dimensions, and dried; as shown in FIG. 1D, the wood sheet 91 is painted. a furfural resin glue 92, the furfural resin glue 92 has viscosity at normal temperature; as shown in FIG. 1E, a plurality of the wood chips 91 are stacked and stacked to form a pre-assembly 93; as shown in FIG. It is shown that the pre-assembly 93 is fed into a molding die 94 for thermal compression; as shown in Fig. ig, the molding die 94 is opened to take out a composite sheet 95. Finally, the composite sheet 95 is subjected to preliminary inspection, cutting, finished product inspection, packaging, and transportation. In general, the above-described conventional method for manufacturing a composite sheet has the following disadvantages, for example, the wood sheets 91 are bonded to the composite sheet 95 by the adhesive bonding of the resin sheet 92. However, the finished product of the composite sheet 95 will continue to release a trace amount of formaldehyde gas after leaving the factory, so that it may not only cause harm to the human body, but also fail to meet the increasingly strict environmental protection standards.

CiUinda^ Pat\PKlOQ36. doc

06/03/31/12:08 PM 1267443 ^In addition, the 'inside the job area 95' _ turn 92 can not be waterproof, = in the case of ship or water environment, prone to degumming, resulting in structural loosening, Relatively reduced service life. In addition, as shown in FIG. 1d, when the wood sheet is brushed with a rubber resin 92, what? The coating thickness of the transfer 92 usually f fills the fiber pores of the wood (four) sheet 91, and the problem of uneven brushing occurs, which easily affects the subsequent hot pressing quality. At the same time, since the yoke=Γ2 is extremely miscellaneous at room temperature, when the wood slabs 91 are piled up in the pile, when the wood sheets 91 are displaced but contacted, they are easily adhered to each other', resulting in stacking. The inconvenience of positioning. In addition, in the inspection of the product, if the composite sheet is found to be % glued, the wooden sheets 91 can be re-stacked because they are tightly glued, so that the composite sheet 95 must be completely scrapped, so that the raw materials are relatively wasted and the good is reduced. Rate 'and also made the disposal of scrap materials to find the side. For the above reasons, it is necessary to further improve the manufacturing method of the above (4) compound women. In view of the above-mentioned (four) improvement of the above disadvantages, the money is recycled from various thermoplastic polymer resin raw materials, which are selected to be pre-formed into a thermoplastic polymer resin sheet and then combined with a wood sheet to form a unit plate; or, the thermoplastic polymer tree The material selection is directly formed on the wood sheet to form a thermoplastic polymer resin sheet, which is then directly combined into a unit plate. The thermoplastic polymer resin 4 is insoluble in water, does not contain m, does not have viscosity at normal temperature, and can increase the structural strength of the unit plate body, making it suitable for long-distance transportation and can select the number of stacked layers according to requirements for subsequent The hot pressing process. Thereby, the present invention can indeed reduce the cost of raw materials and increase the resistance of composite sheets C:\Linda\PK Pat\PK10036. doc

06/03/31/12:08 PM ~ 6 — 1267443 Water, product safety, ease of transport, stack positioning accuracy and manufacturing yield. SUMMARY OF THE INVENTION The main object of the present invention is to provide a method for producing a composite board which recycles various thermoplastic polymer resin raw materials to be pre-combined with a wood sheet into a unit plate for subsequent manufacture of the composite sheet, so that the present invention It has the effect of reducing the cost of raw materials. A secondary object of the present invention is to provide a method for producing a composite sheet wherein the thermoplastic polymer resin sheet on the unit sheet is insoluble in water, so that the present invention has an effect of increasing the water repellency and moisture resistance of the composite sheet. Further, another object of the present invention is to provide a method for producing a composite sheet wherein the thermoplastic polymer resin sheet on the unit sheet contains no formaldehyde, so that the present invention has an effect of increasing the safety of the product of the composite sheet. A further object of the present invention is to provide a method for manufacturing a composite sheet, wherein the thermoplastic polymer resin sheet forming the rubber sheet on the unit sheet is embedded in the fiber of the wood sheet, so that the invention has the structural strength and transportation of the composite sheet. The effect of convenience. Still another object of the present invention is to provide a method for producing a composite sheet in which the thermoplastic polymer resin sheet on the unit sheet body is not viscous at normal temperature, so that the present invention has the effect of increasing the stacking positioning accuracy of the composite sheet. A method of manufacturing a composite sheet according to a preferred embodiment of the present invention, comprising the steps of: recovering or preparing at least one thermoplastic polymer resin raw material; and heat treating the thermoplastic polymer resin material into a thermoplastic poly C:\Linda\FK Pat\PKl0036.doc

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- 7 1267443 w - Λ' - a resin sheet; the thermoplastic polymer resin sheet is heated and applied to at least one surface of a wood sheet to be combined into a unit plate; and the unit is pressed and pressed to Form a composite sheet. A method of manufacturing a composite sheet according to another preferred embodiment of the present invention, comprising the steps of: recovering or preparing at least one thermoplastic polymer resin raw material; and heating the thermoplastic polymer resin material to at least one of the wood-lean sheets In one surface, the thermoplastic polymer resin material forms a thermoplastic polymer resin sheet and is combined with the wood sheet into a unit plate; and heat-compresses at least two unit plates to form a composite sheet. The above and other objects, features, and advantages of the present invention will become apparent from the claims. The above and other objects, features and advantages of the present invention will become more <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; The method for preparing a composite sheet according to the first embodiment of the present invention comprises the steps of: a resin recovery step, a resin flaking step S2, a unit plate step S3, and a thermal compression step S4. The recycled resin step S1 is optionally performed or not performed by recovering (or preparing) at least one of the thermoplastic polymer resin raw materials. The resin flaking step S2 is a step of heat-treating the thermoplastic polymer resin material into a plastic polymer tree rotor sheet. Solvent plate step s3: the thermoplastic C:\Linda\PK Pat\PKI0036. doc

06/03/31/12:08 PH -1267443 A polymeric resin sheet is heated and applied to at least one surface of a wood sheet to assemble a unit plate. The thermocompression bonding step S4 is: thermocompression bonding at least two of the early plate bodies to form a composite sheet. Referring to Figures 2, 3A and 3B, the recycled resin step S1 of the method for producing a composite sheet according to the first embodiment of the present invention is: recovering (or preparing) at least one thermoplastic polymer resin raw material. More specifically, the present invention is preferably obtained from a recycled thermoplastic polymer resin material 10, but may also be obtained from a new thermoplastic polymer resin material (not shown). The recovered source of the thermoplastic polymer resin raw material is at least one selected from the group consisting of a film-formed raw material and a non-membrane-like recovered raw material. For example, the film-like material may be selected from the group consisting of a crop mask film, a greenhouse light-shiel film, an industrial film, a packaging film, or various plastic bags. The non-membrane-recovery raw material may be selected from a woven tape for packaging, a plastic kick tube, or various household/industrial plastic products. The recovered thermoplastic polymer resin raw material is preferably a solid and silky thermoplastic polymer resin such as polyethylene (di), polypropylene (PP), polyethylene terephthalate (PET), Take women's [PVC], acrylonitrile / butadiene / styrene copolymer [2', or polycarbonate (PC), etc., which does not contain a shout, and can only be added to the point of the ship Produce impurities. At this time, the order is supplemented by washing, dehydrating, drying, adding and granulating, etc., and then the subsequent process is granulated. At this time, the granules are sequentially pulverized, washed, dehydrated, dried, and heated to be granulated for use in subsequent processes. In the case of the thermoplastic polymerized sap, it is preferably selected from the group consisting of 7 C:\Ltnda\PK Pat\PK10036. doc 06/03/31/12:08 ΡΙί —9 — -1267443 Please refer to 2, 3B and 3C, the resin flaking step S2 of the method for producing a composite sheet according to the first embodiment of the present invention is a heat treatment of the thermoplastic polymer resin material 1 into a thermoplastic polymer resin sheet 11. More specifically, the thermoplastic polymer resin material 10 is solid at room temperature and has no stickiness. Therefore, the thermoplastic polymer resin sheet 11 is formed by heating or melting by a high frequency or the like, and then rolling or the like by a suitable method such as rolling. The thermoplastic polymer resin sheet 11 can be selectively cut into a suitable length and width dimension, or alternatively formed into a long strip wound on a supply wheel 100 (as shown in Fig. 6). The unit plate step S3 of the method for producing a composite sheet according to the first embodiment j of the present invention is as follows: the thermoplastic polymer resin sheet 11 is heated and pasted on a wood sheet as shown in Figs. 2, 3D, 3E and 3F. At least one surface of the two sides is combined to form a unit plate body 30. More specifically, the present invention prefabricates the wood chip 20 by prefabricating the logs sequentially by cutting, rolling, drying, and cutting, as shown in Fig. 1A. The wood chip 20 is cut to a suitable length and width dimension. If the wood chip 2 does not meet the size standard, the two adjacent wood chips 2 are first bonded by means of a molten thermoplastic resin resin material, and then the edges are trimmed to meet the length and width standards. . After the prefabrication of the wood chip 2, the thermoplastic polymer resin sheet u and the wood chip 2 are first transferred to the stack and positioned in a molding die 3, and then high-frequency or the like is used to heat The thermoplastic polymer resin sheet n and the wood = sheet crucible are combined by thermocompression to constitute the unit sheet body 30. As shown in FIG. 3e, in the heat: the thermoplastic polymer resin sheet 11 is partially melted and infiltrated into the wood fiber shaft of the shell slab 2G, thereby forming a plurality of glue nails m, and the Ί 267443 glue nail 111 is added. The bonding strength between the thermoplastic polymer resin sheet 11 and the wood sheet 2 does not cause the thermoplastic polymer resin sheet 11 to be detached from the wood sheet 20. On the other hand, as shown in Fig. 4, the thermoplastic polymer resin sheet 11 and the wood sheet 20 may be selected into the unit plate body 3 in addition to being cut and combined into the unit plate body 30. Then cut it. That is, the thermoplastic polymer resin sheet n can be selectively formed into a long winding on a supply wheel 100, and the wood sheet 20 can be selectively formed into a long winding on the other supply wheel 200. The two can be transported to a hot pressing roller 3〇1 by a plurality of conveying mechanisms (not labeled), and then subjected to hot pressing and the like, and finally cut into the unit plate body, and appropriately received. Save for later use or shipping. The heat pressing step S4 of the manufacturing method of the composite sheet according to the first embodiment of the present invention is: thermocompression bonding at least two of the unit sheet bodies 30 to form a composite sheet. 4〇. More specifically, firstly, the appropriate number of line units are stacked and stacked (3), and the Qianren-forming stamper is thermocompression-bonded by means of the Southern Zhou wave. After the thermocompression is completed, the composite mold 4G can be taken out by opening the mold. During the thermocompression, the thermoplastic polymer resin sheet U of each of the panels 3 is immersed in the wood fiber of the wood sheet 2G adjacent to the unit board 30, thereby forming a plurality of plastic nails. 1U [as shown in Figure 3e], with ιΓΐ—depending on the bonding strength of the single 70 plate 3G. Finally, the composite a plate 40 is subjected to quality inspection, cutting, finished product inspection, packaging and transportation. C:\Linda\PK Pat\PKl〇〇36. doc

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Referring to Figures 5 and 6, there is disclosed a method of manufacturing a composite sheet material according to a second embodiment of the present invention. In contrast to the first embodiment, the second embodiment comprises the steps of a recycled resin step si, a resin flaking and unit plate step S2+S3 and a thermal pressing step S4, thereby further simplifying the process. The recycled resin step S1 is optional or not performed, which is: recovering (or preparing) at least one thermoplastic polymer resin raw material 10. The resin flaking and unit plate step S2+S3: heating and melting the thermoplastic polymer resin material 10, and directly applying the hot pressing roller 301 to at least one surface of a wood sheet 20, the thermoplastic polymer resin The raw material 10 forms a thermoplastic polymer resin sheet 11 at which time the thermoplastic I polymer resin sheet 11 is combined with the wood sheet 20 to form a unit plate body 30' during curing and forms the nail 111 (as shown in Fig. 3e). The thermocompression bonding step S4 is to thermocompress at least two of the unit plate bodies 3() to form a composite sheet 40 (as shown in Figs. G and 3H). During the coating and forming of the unit plate body 3, the thermoplastic polymer resin sheet 11 is also partially melted and infiltrated into the wood fiber of the wood sheet 2 of the other unit plate body 30, thereby forming a plurality of plastic nails 111. In order to increase the bonding strength of each of the adjacent unit plates (as shown in Fig. 3e). Further, the other manufacturing conditions of the second embodiment follow the process conditions of the first embodiment. As described above, the conventional composite sheet manufacturing method according to FIGS. 1A to 1G utilizes the % change to bind the wood flake %, but the acid is a harmful substance, is not waterproof, and is difficult to be positioned at room temperature, which is disadvantageous for stack positioning. It may also be difficult to be uneven. The second item is recycled with various thermoplastic polymer resins, which are prefabricated: C:\Linda\PK Pat\PKI0036.doc 06/03/31/12:08 P* ~ 12 - 1267844 The thermoplastic polymer resin sheet 11 is further combined with the wood sheet 20 to form the unit sheet body 30; alternatively, the thermoplastic polymer resin material 1 is selectively cured directly on the wood sheet 20 to form the thermoplastic polymer resin sheet η, The unit body 30 is directly combined. The thermoplastic polymer resin sheet 11 is insoluble in water, does not contain formaldehyde, and has no stickiness at normal temperature, and can increase the structural strength of the unit sheet body by the nail 111, making it suitable for long-distance transportation before the post-treatment. And the number of stacked φ layers of the unit plate body 30 can be selected according to requirements for subsequent thermal compression bonding process. Thereby, the present invention can surely reduce the raw material cost and increase the water repellency of the composite sheet, product safety, transportation convenience, stack positioning accuracy, and manufacturing yield. 1 Although the present invention has been disclosed in the above-described preferred embodiments, it is not intended to limit the invention, and various modifications and changes may be made without departing from the spirit and scope of the invention. The scope of the invention is defined by the scope of the appended claims. Although the present invention has been disclosed in the foregoing preferred embodiments, the present invention is not limited thereto, and various modifications and changes can be made without departing from the spirit and scope of the invention. The scope of the invention is defined by the scope of the appended claims. C:\Linda\PK Pat\PKl〇〇36. doc —13 —

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1267443 [Simple description of the drawings] Figure 1A炱1G: Schematic diagram of the manufacturing method of the conventional composite sheet. Fig. Id: a partially enlarged view of a conventional wood chip brushed with a formaldehyde resin. Fig. 2 is a flow block diagram showing a method of manufacturing a composite sheet according to a first embodiment of the present invention.

3A to 3H are views showing a flow chart of a method of manufacturing a composite sheet according to a first embodiment of the present invention. Fig. 3e is a partially enlarged view showing the hot pressing of the wood chip of the first embodiment of the present invention in combination with the thermoplastic polymerized resin sheet. Fig. 4 is a schematic view showing the process of the unit plate body of the first embodiment of the present invention. Figure 5 is a flow chart showing a method of manufacturing a composite sheet according to a second embodiment of the present invention. Fig. 6 is a flow chart showing a method of manufacturing a composite sheet according to a second embodiment of the present invention. [Main component symbol description] 100 supply wheel 111 glue nail 200 supply wheel 300 molding die 40 composite sheet 90 log 10 thermoplastic polymer resin raw material 热塑性 thermoplastic polymer resin sheet 20 wood sheet 3 〇 unit plate body 301 hot pressing roller 400 forming stamper

C:\Linda\PK Pat\PK10036. doc _ 1 A 〇6/〇3/31/12; 〇8 1267443 91 Wood foil 92 Formaldehyde resin 93 Pre-assembly 94 Forming stamp 95 Composite sheet 1 06/03/ 31/12:08 P« C:\Linda\PK Pat\PKI0036.doc 15

Claims (1)

1267443 ^ X. Patent application scope: 1. A method for manufacturing a composite board comprising the steps of: _ heat-treating at least one thermoplastic polymer resin raw material into a thermoplastic polymerized resin sheet; heating and laminating the thermoplastic polymer resin sheet Forming a unit plate body on at least one surface of a wood sheet; and thermocompression bonding at least two unit plate bodies to form a composite sheet. φ 2. The method for producing a composite sheet according to claim 1, wherein at least one of the thermoplastic polymer resin raw materials is recovered for producing the thermoplastic polymer resin sheet. 3. The method for producing a composite sheet according to the second aspect of the invention, wherein the source of the thermoplastic polymer resin is recovered from at least one of a film-like raw material or a non-membrane-based recycled material. 4. The method for producing a composite sheet according to claim 1, wherein the thermoplastic polymer resin material is selected from the group consisting of thermoplastic polymer resins which are solid at room temperature and which are non-sticky. 5. The method for producing a composite board according to claim 4, wherein the thermoplastic polymer resin material is selected from the group consisting of polyethylene, polypropylene, polyethylene terephthalate, polyvinyl chloride, and acrylonitrile. /butadiene / , at least one of a styrene copolymer and a polycarbonate. 6. The method for manufacturing a composite board according to claim 1, wherein before the wood sheet and the thermoplastic polymer resin sheet are combined into the unit board, if the wood sheet does not meet the size standard, the board is first used. Each of the two adjacent wood chips is bonded by using the thermoplastic C:\Linda\PK Pat\PK10036.doc-16- 06/03/31/12:08 PM 1267443 polymer resin raw material. 7. The method for producing a composite sheet according to claim 1, wherein the heating is performed by one of a high-frequency method and a rolling method to thermally bond the thermoplastic polymer resin sheet and the wood sheet. 8. The method for producing a composite sheet according to the invention of claim 2, wherein the thermoplastic polymer resin sheet is partially melted and infiltrated into the wood fiber of the wood sheet during hot pressing, thereby forming a plurality of plastic nails. Increase the bonding strength of the unit plate. 9. The method of manufacturing a composite sheet according to claim 1, wherein the thermoplastic polymer resin sheet and the wood sheet are first cut and then combined into the unit sheet. 10. The method for producing a composite sheet according to the first aspect of the invention, wherein the thermoplastic polymer resin sheet and the wood sheet are cut after forming the unit sheet. 11. The method of manufacturing a composite sheet according to claim 1, wherein the method of heating is performed by a Southern Zhou wave method to thermally press at least two of the unit plates. 12. The method for manufacturing a composite sheet according to the invention, wherein the thermoplastic polymer resin sheet of each of the unit sheets is partially melted and infiltrated into another wood sheet adjacent to the unit sheet during hot pressing. In the wood fiber, a plurality of glue nails are formed to increase the bonding strength of the composite board. 13. A method of producing a composite sheet comprising the steps of: heating and coating at least one thermoplastic polymer resin material on a wood C:\Linda\PK Pat\PK10036. doc 06/03/31/12:08 PM 1267443 At least one surface, the thermoplastic polymer resin material forms a thermoplastic polymer resin sheet and is combined with the wood sheet into a unit sheet; and the unit sheet body is thermocompression bonded to form a composite sheet. The method of producing a composite sheet according to claim 13, wherein at least one of the thermoplastic polymer resin raw materials is recovered for coating on the wood sheet to form the thermoplastic polymer resin sheet. The method for producing a composite sheet according to claim 14, wherein the source of the thermoplastic polymer resin is recovered from at least one of a film-like recycled material or a non-membrane-based recovered material. The method for producing a composite sheet according to claim 13, wherein the thermoplastic polymer resin material is selected from the group consisting of thermoplastic polymer resins which are solid at room temperature and which are not viscous. 17. The method for producing a composite sheet according to claim 16, wherein the thermoplastic polymer resin material is selected from the group consisting of polyethylene, polypropylene, φ polyethylene terephthalate, polyvinyl chloride, acrylonitrile/ At least one of a butadiene/styrene copolymer and a polycarbonate. The method for manufacturing a composite board according to claim 13, wherein before the wood sheet and the thermoplastic polymer resin sheet are combined into the unit board, if the wood sheet does not meet the size standard, the board is first used. In a manner, the two adjacent wood chips are bonded by using the melted thermoplastic polymer resin raw material. 19. The method of manufacturing a composite sheet according to claim 13, wherein the thermoplastic polymer resin sheet is partially melted and infiltrated into the coating C: Uinda\PK Pat\PKl〇〇36. doc ——18— — 06/03/31/12:08 ΡΙί •Ί267443 In the wood fiber of the wood chip, several glue nails are formed to increase the bonding strength of the unit plate. 2 . The method for manufacturing a composite board according to claim 13 , wherein the wood sheet is first cut and then combined into the unit board 21 , and the compound according to claim 13 A method of manufacturing a sheet, wherein the wood sheet is cut after forming the unit sheet. 22. The method of manufacturing a composite sheet according to claim 13, wherein the high-frequency method is used to heat-bond at least two of the early-plate bodies. The method for manufacturing a composite sheet according to claim 13, wherein the thermoplastic polymer resin sheet of each of the unit sheets is partially melted and infiltrated into another wood sheet adjacent to the unit sheet during hot pressing. Within the wood fiber, a plurality of glue nails are formed to increase the bonding strength of the composite board. C:\Lind8\nc Pat\PK10036. doc —19 — 06/03/31/12:08 PM