JP2011068015A - Plyboard, palm plyboard, method of manufacturing plywood, and method of manufacturing palm plyboard - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To manufacture a plyboard at low cost without using a single board of relatively satisfactory timber in quality as a face and back. <P>SOLUTION: A method of manufacturing the plyboard includes: a step of laminating a plurality of single boards, at least the outermost one of which is a palm single board with a resin adhesive; a step of polishing a surface that is a surface of the palm single board and where the resin adhesive is permeated in an exposed palm fiber; a step of applying the resin adhesive to the polished surface so that the resin adhesive is permeated in the palm fiber; and a step of drying the resin adhesive. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a plywood, a palm plywood, a plywood manufacturing method, and a palm plywood manufacturing method.

  Plywood made by laminating a plurality of single veneers of wood is used for various purposes.

  Ordinary plywood is manufactured by laminating a veneer of broad-leaved trees such as China and Lauan, or a coniferous tree such as larch (see Patent Document 1, for example).

  FIG. 4 is a perspective view showing an example of a conventional plywood, and FIG. 5 is a flowchart showing an outline of the steps of a conventional method for manufacturing a plywood.

  The plywood shown in FIG. 4 is a five-layer plywood, and a face 104 and a back 105 are attached to three-layer core materials 101 to 103.

  When manufacturing such a plywood, first, a cut tree trunk is cut to manufacture a veneer (step S101).

  Next, the veneer obtained in the cutting process is dried (step S102). After drying, an adhesive is applied to the bonding surfaces of the core materials 101 to 103 (step S103). After the core materials 101 to 103 are stacked, cold pressure is applied (step S104), followed by hot pressing (step S105). Manufacturing.

  After the core was manufactured in this way, an adhesive was applied to the bonding surfaces of the core materials 101 to 103, the face 104, and the back 105 (step S106), and cold pressure was applied (step S107) in a state where these were laminated. Thereafter, hot pressing is performed (step S108).

  Finally, it is finished by cutting to a predetermined dimension and polishing the surface (step S109).

  In this way, plywood can be manufactured using various trees as raw materials.

JP-A-6-170807

  In Southeast Asia, palm (oil palm) is cultivated for the production of palm oil. The empty fruit bunch after palm oil collection contains a lot of fibers and is used for various purposes. For example, fiber boards containing fibers of empty fruit bunches of palm are manufactured.

  On the other hand, palm trunks that are harvested every year are not used effectively, and most are discarded. In Malaysia and other countries, a large amount of palm is cultivated for the production of palm oil, and a large amount of palm trunks are discarded every year, which is regarded as a problem from the viewpoint of the global environment.

  When a plywood is manufactured from the above-mentioned coniferous trees or hardwoods, since the manufacturing cost is high, it is required to manufacture the plywood at a low cost. In response to this demand, it is considered that plywood can be manufactured at a low cost by using such a waste material.

  However, since the waste material such as palm described above has poor surface quality when it is made into a plate, it is necessary to attach the face and back as described above in order to increase the surface quality of the plywood. When a face and a back are pasted, a single plate of a relatively good quality tree (such as Southern materials such as lauan) is used as the face and the back, resulting in an increase in manufacturing cost.

  The present invention has been made in view of the above problems, and does not use a veneer having relatively good quality as a face and a back, and can be manufactured at a low cost, a plywood, and a plywood. It aims at obtaining a manufacturing method and a palm plywood manufacturing method.

  In order to solve the above problems, the present invention is configured as follows.

  The plywood according to the present invention includes a plurality of single plates bonded with an adhesive. The adhesive is infiltrated into the fibers exposed on the surfaces of the plurality of single plates.

  Thereby, a plywood can be manufactured at low cost, without using the veneer | wooden board of comparatively favorable quality as a face and a back | bag.

  The palm plywood according to the present invention includes a plurality of single plates bonded with a resin adhesive. And the outermost at least one single board of the plurality of single boards is a palm single board, and a resin adhesive is infiltrated into the palm fiber exposed on the surface of the palm single board.

  This makes it possible to treat the surface with a resin adhesive using palm veneers that can be manufactured from palm trunks of inexpensive waste materials without using veneers of relatively good quality as faces and backs. Thus, the plywood can be manufactured at a low cost.

  Moreover, in addition to said palm plywood, the palm plywood which concerns on this invention may be made as follows. In this case, the plurality of single plates are all palm single plates.

  Thereby, since only the palm single board which can be manufactured from the palm trunk of an inexpensive waste material is used as a single board, a plywood can be manufactured cheaply.

  Moreover, the palm plywood according to the present invention may be as follows in addition to any of the above-mentioned palm plywood. In this case, the resin adhesive permeated into the palm fiber is similar to the resin adhesive used for bonding a plurality of single plates.

  Thereby, since a resin adhesive is the same type | system | group, a plywood can be manufactured cheaply. The “same system” used herein includes the same resin adhesive and the same type of resin adhesive such as a urea resin adhesive, in which the composition (for example, the blending ratio) of the constituents is changed.

  Moreover, the palm plywood according to the present invention may be as follows in addition to any of the above-mentioned palm plywood. In this case, the resin adhesive is infiltrated into the palm fiber after the surface on which the resin adhesive is infiltrated into the palm fiber is polished.

  Thereby, while being able to reduce the palm fiber which protrudes from the plywood surface, it can make it easy to permeate | transmit a resin adhesive to palm fiber.

  The plywood manufacturing method according to the present invention includes a step of bonding a plurality of single plates with an adhesive, a step of polishing a surface that is a surface of the plurality of single plates and allows the adhesive to penetrate into exposed fibers, and polishing. A step of applying an adhesive to the finished surface and allowing the adhesive to penetrate into the fiber, and a step of drying the adhesive.

  Thereby, a plywood can be manufactured at low cost, without using the veneer | wooden board of comparatively favorable quality as a face and a back | bag.

  The palm plywood manufacturing method according to the present invention includes a step of bonding a plurality of veneers in which at least one outermost veneer is a palm veneer with a resin adhesive, and a surface of the palm veneer, which is exposed. A step of polishing a surface that allows the resin adhesive to penetrate into the palm fiber, a step of applying the resin adhesive to the polished surface and infiltrating the resin adhesive into the palm fiber, and a step of drying the resin adhesive .

  This makes it possible to treat the surface with a resin adhesive using palm veneers that can be manufactured from palm trunks of inexpensive waste materials without using veneers of relatively good quality as faces and backs. Thus, the plywood can be manufactured at a low cost.

  According to the present invention, a plywood and a palm plywood that can be manufactured at a low cost, and a plywood manufacturing method and a palm plywood manufacturing method can be obtained without using a veneer of relatively good quality wood as a face and a back. Can do.

FIG. 1 is a flowchart showing an outline of the steps of a plywood manufacturing method according to an embodiment of the present invention. FIG. 2 is a perspective view showing an example of laminated palm single plates obtained in the steps up to step S5 in FIG. FIG. 3 is a perspective view showing an example of a plywood according to the embodiment of the present invention. FIG. 4 is a perspective view showing an example of a conventional plywood. FIG. 5 is a flowchart showing an outline of the steps of a conventional method for manufacturing a plywood.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  In the embodiment of the present invention, a plywood is manufactured from a felled trunk of a palm. FIG. 1 is a flowchart showing an outline of the steps of a plywood manufacturing method according to an embodiment of the present invention.

  First, a felled trunk of a palm is cut with a lace machine to produce a palm single plate (step S1).

  Next, the palm single plate obtained in the cutting process is dried with a dryer (step S2).

  After the palm veneer is dried, a resin adhesive is applied to the palm veneer (step S3). In this embodiment, a urea resin adhesive is used as the resin adhesive.

  After applying the resin adhesive, a plurality of odd-numbered palm single plates are laminated so that the fiber directions of adjacent single plates are substantially orthogonal, and cold-pressed with a cold press machine (step S4).

  Next, the resin adhesive is cured by hot pressing with a hot press machine (step S5).

  Through the steps so far, a portion corresponding to the above-described core is manufactured. FIG. 2 is a perspective view showing an example of laminated palm single plates obtained in the steps up to step S5 in FIG.

  In FIG. 2, three palm single plates 1 to 3 are laminated and bonded. The palm single plates 1 to 3 contain a lot of relatively thick and brittle palm fibers 11, and the palm fibers 11 are particularly easily separated from the surfaces of the palm single plates 1 and 3. In this embodiment, the plywood surface is stabilized by the following steps without using the face and the back.

  After bonding the palm veneer, the surface of the outermost two palm veneers 2 and 3 among the laminated palm veneers (excluding the side surfaces, the plane where the other palm veneers are not bonded) is polished. Polishing and smoothing with a machine (step S6). The thickness of the plywood may be adjusted by this polishing. And the plywood which consists of palm single board 1-3 is cut | judged to desired size (step S7).

  After that, a resin adhesive is applied to the surfaces of the outermost two palm single plates 2 and 3 among the laminated palm single plates 1 to 3 (that is, the surfaces polished by a polishing machine) to obtain palm fibers. The resin adhesive is infiltrated into 11 and the surface is coated (step S8). In this embodiment, the same resin adhesive used in Step S3 or the same resin adhesive having a different blending ratio may be applied to the surfaces of the palm single plates 2 and 3.

  Thereafter, in order to dry and solidify the applied resin adhesive, the plywood surface-treated in step S8 is dried with a dryer (step S9).

  In addition, when apply | coating a resin adhesive to the surface of both palm single boards 2 and 3 and performing a surface treatment, the process of step S8, S9 is performed a total of 2 times for each side.

  Thus, the palm plywood by the palm single plates 1-3 can be manufactured.

  FIG. 3 is a perspective view showing an example of a plywood according to the embodiment of the present invention. As shown in FIG. 3, since the palm fiber 11 exposed on the plywood surface is fixed to the plywood by the resin adhesive, the palm fiber 11 is difficult to separate from the surface, the surface is stabilized, and the surface quality is improved. To do.

  As described above, the plywood manufacturing method according to the above embodiment includes a step of bonding a plurality of veneers 1 to 3 whose outermost at least one veneer is a palm veneer with a resin adhesive, and a palm veneer. And polishing the surface of the exposed palm fiber 11 to infiltrate the resin adhesive, applying the resin adhesive to the polished surface and infiltrating the palm fiber 11 with the resin adhesive; And a step of drying the resin adhesive.

  Therefore, the plywood according to the above embodiment includes a plurality of single plates 1 to 3 bonded together with a resin adhesive. And the outermost at least one single board of the plurality of single boards 1 to 3 is a palm single board, and the resin adhesive is infiltrated into the palm fiber 11 exposed on the surface of the palm single board. It will be in a certain state.

  This makes it possible to treat the surface with a resin adhesive using palm veneers that can be manufactured from palm trunks of inexpensive waste materials without using veneers of relatively good quality as faces and backs. Thus, the plywood can be manufactured at a low cost.

  The above-described embodiment is a preferred example of the present invention, but the present invention is not limited to these, and various modifications and changes can be made without departing from the scope of the present invention. .

  For example, in the above embodiment, a palm trunk is used as a raw material, but plywood may be manufactured as described above using other trees such as poplar and eucalyptus as a raw material.

  Further, in the above embodiment, the plywood is manufactured from three single plates, but the plywood can be similarly manufactured from other single plates such as five or seven.

  Moreover, in the said embodiment, although all the single boards are palm single boards, about the single board (for example, single board 1 in FIG. 2 and FIG. 3) to which another single board is adhere | attached on both sides, it is other than palm. A single plate of material may be used.

  Moreover, in the said embodiment, you may make it apply | coat a resin adhesive to the surface of only one side of the palm single board 2 and 3 in step S8, and may make it surface-treat. Moreover, in the said embodiment, you may apply | coat a resin adhesive to the side surface of the palm single boards 1-3, and may perform a surface treatment.

  In the above embodiment, the resin adhesive used in step S8 may be different from the resin adhesive used in step S3.

  Further, in the above embodiment, after the surface treatment and drying with the resin adhesive in step S8 and step S9, the surface of the plywood, that is, the surface of the plywood is smooth-polished to such an extent that the dried resin adhesive is not completely removed by a polishing machine You may make it do.

  Further, in the above embodiment, after the surface treatment and drying with the resin adhesive in step S8 and step S9, the surface of the plywood, that is, the surface of the dried resin adhesive is smooth-polished with a polishing machine, and further, step S8 and step A surface treatment with a resin adhesive may be performed in S9.

  Moreover, in the said embodiment, the method by an impregnation may be sufficient as the resin adhesive other than the method by application | coating.

  Moreover, in the said embodiment, you may make it use another thing (A melamine resin adhesive, a melamine urea resin adhesive, a phenol resin adhesive, etc.) as a resin adhesive according to a use.

  In addition, the plywood in the said embodiment is what laminated | stacked the adjacent single plate so that a fiber direction may be substantially orthogonal, but LVL (laminated | stacked adjacent single plate so that a fiber direction may become substantially parallel ( Laminated Veneer Lumber).

  The present invention is applicable, for example, to the manufacture of palm plywood using palm waste.

1-3 Palm veneer (an example of veneer)
11 Palm fiber (an example of fiber)

Claims (7)

It has a plurality of single plates bonded with adhesive,
An adhesive is infiltrated into the fibers exposed on the surfaces of the plurality of veneers,
Plywood characterized by It has a plurality of single plates bonded with resin adhesive,
The outermost at least one single plate of the plurality of single plates is a palm single plate,
The resin adhesive is infiltrated into the palm fiber exposed on the surface of the palm veneer,
Palm plywood characterized by   The palm plywood according to claim 2, wherein all of the plurality of single plates are palm single plates.   4. The palm according to claim 2, wherein the resin adhesive permeated into the palm fiber is of the same type as a resin adhesive used for bonding the plurality of single plates. plywood.   The palm according to any one of claims 2 to 4, wherein a resin adhesive is infiltrated into the palm fiber after polishing a surface through which the resin adhesive is infiltrated into the palm fiber. plywood. Bonding a plurality of single plates with an adhesive,
Polishing the surface of the plurality of single plates, the surface in which the adhesive is infiltrated into the exposed fibers;
Applying an adhesive to the polished surface to infiltrate the adhesive into the fiber;
Drying the adhesive;
A plywood manufacturing method comprising: A step of bonding a plurality of single plates, wherein at least one outermost single plate is a palm single plate, with a resin adhesive;
Polishing the surface of the palm veneer, the surface of the exposed palm fiber permeating the resin adhesive; and
Applying a resin adhesive to the polished surface and infiltrating the resin adhesive into the palm fiber;
Drying the resin adhesive;
A method for producing palm plywood, comprising:

Images