JP2005145520A - Plate storing/carrying method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent plates in any line from warping in its widthwise direction. <P>SOLUTION: In a plate storing/carrying method that includes the steps of forming a unit 8 by neatly arranging plates in the same longitudinal direction 18 and by covering the stacks of plates with corrugated paper 24, forming lines 3 by staking the units 8, and forming rows by arranging the lines 3 in the widthwise direction 20, the corrugated paper 24 covering the stacks of the plates covers at least the sides 12 of the stacks along the longitudinal direction of the stacks, the parts corresponding to the sides 12 have projections 26 which stick out, the leading ends of the projections 26 abut on one another when the lines 3 are disposed adjacent to one another, and spaces 30 through which ambient air is allowed to flow in and flow out are formed between the lines 3. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a method for storing and transporting wooden boards, and particularly to a method for storing and transporting wooden boards such as floor boards, wall boards, and ceiling boards.

  In general, wood-based board materials such as floor boards, wall boards, and ceiling boards are preferably free from warping as much as possible. In particular, if there is a warp in the width direction of the plate material, when these warped plate materials are stretched in parallel with each other, the plate materials will interfere with each other and will not stick together over the entire length in the longitudinal direction, so floors, walls, ceilings, etc. It cannot be used as a plate material. The warpage of the plate material may occur in the production process, but even the plate material that passed the quality inspection is in the environment where it is placed, for example when it is humid such as rainy season, and then inadvertent storage, New warping may occur due to transportation or handling.

  As an example of a conventional plate material storage method, for example, there is a storage method as shown in FIG. In this storage method, a unit 8 is formed by covering several sheets of plate materials and stacking them with corrugated cardboard sheets in which the longitudinal direction 18 is aligned in the same direction, and then stacking the units 8 several times in the vertical direction. 3 are arranged in the width direction 20 orthogonal to the longitudinal direction 18 to form a plurality of rows to form the block 1.

  However, in the conventional plate material storage method, the outer side surface 5 along the longitudinal direction of the row 3 is in contact with the surrounding air (ambient air). Easy to receive. When the outer side surface 5 comes into contact with the ambient air in a state where the original moisture content of the plate material is low, the outer side surface 5 sucks moisture contained in the ambient air. When the outer side surface 5 sucks moisture, the moisture content on the outside of the plate (equilibrium moisture content) becomes higher than the moisture content on the inside. When the moisture content on the outer side of the plate material increases, the outermost row of plate members (floor plates) 16 has an arc shape in the width direction 20 and the center of the plate member 16 protrudes outward as indicated by a two-dot chain line in FIG. Warps to become.

  On the contrary, when the outer side surface 5 comes into contact with the ambient air in a state where the original moisture content of the plate material is high, the moisture contained in the outer side surface 5 is released into the ambient air. When moisture is released from the outer side surface 5, the moisture content outside the plate (equilibrium moisture content) becomes lower than the moisture content inside. When the moisture content on the outside of the plate material decreases, the plate material 16 in the outermost row is in an arc shape in the width direction 20 in the direction opposite to the warping direction shown in FIG. 7, and the center of the plate material 16 is inward. Warps to dent.

  As the degree of warping due to the change of the moisture content on one side in the width direction of the plate material, when the length of the plate material is 1800 mm, for example, the height of the central portion with respect to the arc chord is several mm. The warped plate material 16 cannot be used as a flooring material or a wall material because the male body (or female body) and the female body (or male body) of the plate material 16 do not match when stretched in parallel with each other.

  The subject of this invention is that the board | plate material of any row | line | column does not warp in the width direction.

  In order to solve the above-described problems, the present invention forms a unit by covering a bundle of a plurality of plate members stacked vertically in the same direction with the longitudinal direction of the plate members aligned in the same direction, and then stacking the units in the vertical direction. Forming a row and arranging the rows in a direction orthogonal to the longitudinal direction to form a plurality of rows, wherein the packing material covering the bundle of plate materials is at least in the longitudinal direction of the bundle A projection corresponding to the side surface and bulging outward, and when the rows are adjacent to each other, the tips of the projections are in contact with each other. A space in which air can enter and exit is formed.

  By doing so, the packaging material covering the bundle of units covers at least the side surface along the longitudinal direction of the bundle and has a protrusion that bulges outward in the portion corresponding to the side surface. When protruding in parallel, the protruding tips of the packing material come into contact with each other. A space is formed between the units when the protruding tips of the packing material come into contact with each other. Since this space allows ambient air to enter and exit, the side surfaces of each unit touch the ambient air substantially evenly.

  When the side surface of each unit touches the surrounding air substantially evenly, the packing material side surface of each unit absorbs moisture from the surrounding air or releases moisture to the surrounding air. Therefore, even at both ends along the longitudinal direction of the plate material, moisture from the surrounding air is absorbed through the side of the packing material of the unit, or moisture is released to the surrounding air, so the moisture content on the left and right in the width direction of the plate material is substantially equal. No warping on either side in the width direction.

  Next, each requirement constituting the present invention will be described in more detail. The present invention relates to a method for storing, transporting, transporting or handling a plate material. The board material is a wood-based material such as a floor board, a wall board, or a ceiling board of a house or a general building, such as a hardwood or conifer plywood or a laminated board, a single board laminated board, a particle board, a wood fiber board (MDF, etc.), etc. .

  In the unit, several sheets, for example, 6 sheets in the case of a floor board, are bundled as a bundle and covered with a packaging material such as cardboard paper, and at least the side surfaces along the longitudinal direction of the bundle are covered. Cardboard paper may be formed in a box shape, and this bundle may be stored in this box to cover and protect the whole.

  A row is a stack of a plurality of the above units, for example, 10 units in the vertical direction. This row is arranged in a direction (width direction) orthogonal to the longitudinal direction to form a block having a plurality of rows.

  A packing material has a protrusion in the part corresponding to the side surface of a bundle. The material of the packing material is cardboard paper, thick hard paper, or the like, which is hygroscopic.

  As for the shape and size of the protrusions on the packing material, the space between the adjacent units or rows is formed so that ambient air can enter and exit, and the protrusions are kept in contact with each other when they are displaced from each other. If it does, it will not specifically limit. The shape of the protrusion may be, for example, a columnar shape, a truncated cone shape, a prismatic shape, a polygonal columnar shape, a columnar shape with other irregular cross section, or a trapezoidal shape with a cross-sectional shape and an elongated line shape or a curved shape. The tip of the protrusion should be flat. Since the tips of the protrusions are flat, contact between the tips of the protrusions is easily maintained when adjacent units or rows are displaced from each other.

  The position and number of the protrusions are not particularly limited as long as a space in which surrounding air can enter and exit can be formed. However, when the adjacent units are aligned with each other, any protrusion is always provided. It is determined so that the leading ends are in contact with each other. For this reason, it is preferable that the protrusions wrap (overlap) along the longitudinal direction of the unit. Furthermore, it is preferable that the distance between the upper protrusion and the lower protrusion is smaller than the height of the protrusion in the vertical direction. Further, a plurality of protrusions are provided at appropriate positions regularly or irregularly along the longitudinal direction of the unit, and at a suitable position with respect to the vertical direction.

  The height of the protrusions is such that the distance between adjacent units (or rows) due to the contact between the protruding tip of one adjacent unit and the protruding tip of the other unit is 3 mm or more. Set to Accordingly, the height of the protrusion is set to be 1.5 mm or more, which is a half of the distance between the units. When the height of the protrusion is less than 1.5 mm, the distance between the units is too small, the surrounding air is insufficiently entered and exited, and the moisture content on both sides in the width direction of the plate material is different, causing warpage. Become.

  The warpage in the width direction of the plate material is the moisture content outside the plate material (equilibrium moisture content) because the outer side surface of the packing material sucks moisture contained in the surrounding air when the original moisture content of the plate material is low. ) Is higher than the moisture content inside. When the moisture content on the outside of the plate material becomes higher than the moisture content on the inside, the plate material warps so as to be convex outward in an arc shape.

  On the other hand, in the state in which the moisture content at the time when the plate material is manufactured is high, the moisture outside the plate material is absorbed by the outer side surface of the packaging material, and this moisture is further released from the outer side surface of the packaging material to the ambient air. Thereby, since the moisture content of the outer side of a board | plate material becomes lower than the moisture content of an inner side, a board | plate material will bend | curve so that it may dent in circular arc shape in the inside.

  According to the present invention, the plate members in any row are affected almost uniformly by the ambient air, so that the plate members themselves do not warp in the width direction.

  Hereinafter, the best mode of the plate material storage and transport method according to the present invention will be described in detail with reference to the drawings. 1 to 5, the same or equivalent parts are denoted by the same reference numerals. Moreover, in each figure, the baseboard or pallet laid under the block is omitted.

  1A and 1B show an embodiment of a plate material storage and transport method according to the present invention, in which FIG. 1A is a front view and FIG. 1B is a plan view of FIG. FIG. 2 shows the unit of the embodiment shown in FIG. 1, in which (A) is a front view and (B) is a plan view of (A). FIG. 3 is a cross-sectional view taken along line aa in FIG. This plate material storage and transport method indicates a method for storing, transporting, transporting or handling plate materials such as floor boards, wall boards, and ceiling boards in houses and general buildings. The board is a wood-based material, such as hardwood or softwood plywood or laminated wood, single board laminated board, particle board, wood fiber board (MDF, etc.) and the like. When a board | plate material is a floor board, the magnitude | size is about width 100-300mmx length 900-1818mmx thickness 4-15mm, for example.

  As shown in FIG. 2, the protrusions 26 provided on the cardboard paper 24 in the unit 8 are located on the side surfaces of the unit 8 and are regularly arranged along the longitudinal direction thereof, and the units 8 are adjacent to each other. Arranged so that the tips of any of the protrusions 26 are always in contact with each other when the side surfaces are aligned. The protrusions 26 shown in FIG. 2 are a set of three protrusions 26 arranged in a straight line along the longitudinal direction 18 of the unit 8 and are divided into upper and lower two stages and regularly arranged in a staggered manner. Yes. Furthermore, the upper ridge 26 and the lower ridge 26 partially wrap.

  As shown in FIG. 3, the unit 8 is formed of a bundle 10 in which six plate members are stacked as a set, and cardboard paper (packaging material) 24 covering the bundle 10. The sheet material bundle 10 is stored in a box formed of corrugated paper 24 by stacking up and down six sheets whose longitudinal directions (reference numeral 18 in FIG. 1) are aligned in the same direction. The corrugated cardboard 24 has a protrusion 26 that bulges outward at a portion corresponding to the side surface 12 of the bundle. Cardboard paper is hygroscopic. Moreover, the bundle 10 may be partially covered with the corrugated cardboard paper 24. For example, the side surface 12 and its corners along the longitudinal direction of the bundle 10 may be covered.

  The shape and size of the protrusions 26 are not particularly limited as long as ambient air can enter and exit. However, even when the adjacent units 8 are displaced from each other, contact between the protrusions 28 is maintained. Is preferred. In the first embodiment, the shape of the protrusion 26 is a truncated cone, and the tip 28 of the protrusion is flat. Further, the distance between the upper protrusion 26 and the lower protrusion 26 is formed to be smaller than the vertical height (or width) of the protrusion 26. The height h of the protrusion 26 is such that the distance (2 × h) between the units formed by the contact between the protrusion tip 28 of one unit and the protrusion tip 28 of the other unit is 3 mm or more. Is set to be Accordingly, the height h of the protrusion is set to be 1.5 mm or more, which is a half of the distance between the units 8.

  As shown in FIG. 1, the unit 8 is bound by a synthetic resin band 14 such as polypropylene at a total of four locations, near both ends in the longitudinal direction and two in the middle. In row 3, a plurality of the units 8, for example, 10 units are stacked in the vertical direction. The block 1 is formed by arranging three rows 3 in the width direction 20 orthogonal to the longitudinal direction. When the rows 3 are adjacent to each other, the tips of the protrusions 26 come into contact with each other, and a space 30 in which ambient air can enter and exit is formed between the rows.

  In the column 3, the units 8 are stacked in 10 stages in the vertical direction, but the number of stages is not limited. Further, the number of columns 3 is not limited to three, but may be two or four or more. The block 1 is bundled together with a band 32 made of a synthetic resin such as polypropylene at two positions near the front and rear in the longitudinal direction 18.

  Next, the operation of the first embodiment will be described. In FIG. 1, the corrugated cardboard paper 24 covering the bundle of units covers the side surface along the longitudinal direction of the bundle of plate materials, and has a protrusion 26 that bulges outward at a portion corresponding to the side surface, so that the units 8 are adjacent to each other. When arranged in parallel, the tips of the cardboard paper projections 26 come into contact with each other.

  A space 30 is formed between the rows 3 by the tips of the cardboard paper projections 26 coming into contact with each other. Since this space 30 allows ambient air to enter and exit, the side surfaces of each unit 8 (or each row 3) touch the ambient air substantially evenly. When the side surface of each unit 8 touches the ambient air substantially evenly, moisture enters the side surface of each unit 8 from the ambient air, or moisture is released from the side surface of each unit 8 to the ambient air. Accordingly, moisture enters from both sides of the unit 8 along the longitudinal direction of the plate through the side surface of the unit 8 from the surrounding air, or moisture is released from both ends of the plate, and the moisture content of the plate 20 in the width direction 20 is substantially equal. Therefore, the plate material does not warp on either side in the width direction 20.

  Further, since the tips of the protrusions 26 are flat, when the adjacent units 8 are displaced from each other, the contact between the tips of the protrusions 26 is easily maintained. In addition, by setting the height h of the protrusion 26 to 1.5 mm or more, the distance between the units 8 (or rows 3) becomes 3 mm or more, and ambient air can enter and exit. Moisture content in is almost equal and no warping occurs.

  4A and 4B show units in another embodiment of the plate material storage and transport method according to the present invention. FIG. 4A is a front view, and FIG. 4B is a plan view of FIG. FIG. 5 is a cross-sectional view taken along line bb in FIG. In the unit 8 of the second embodiment, the protrusions 26 formed on the side surface of the corrugated cardboard paper 24 are elongated and aligned in a straight line at a predetermined interval along the longitudinal direction 18, and in two upper and lower tiers and in a staggered manner. Arranged. Further, the upper step protrusion 26 and the lower step protrusion 26 are formed so as to wrap in the longitudinal direction 18. And it is good to form the height dimension of the up-down direction of the protrusion 26 comparatively large. The protrusion 26 has a flat tip 28. The height h of the protrusion 26 is set to be 1.5 mm or more, and the distance between adjacent units is set to 3 mm or more.

  As shown in FIG. 5, the unit 8 of the second embodiment is also formed by a bundle 10 in which six plate members are stacked as a set, and cardboard paper (packaging material) 24 covering the bundle 10. The bundle 10 of plate materials is stacked in the vertical direction by stacking six sheets whose longitudinal directions (reference numeral 18 in FIG. 4) are aligned in the same direction, and stored in a box of cardboard paper 24 to be protected as a whole. The corrugated cardboard 24 has a protrusion 26 that bulges outward at a portion corresponding to the side surface 12 of the bundle. Cardboard paper is hygroscopic. Moreover, the bundle 10 may be partially covered with the corrugated cardboard paper 24. For example, the side surface 12 and its corners along the longitudinal direction of the bundle 10 may be covered.

  The unit 8 of the second embodiment has a simplified side surface shape and is easily formed. Since the upper-stage protrusion 26 and the lower-stage protrusion 26 are overlapped, when the side surfaces of the two units 8 are aligned, the adjacent units 8 may be displaced even if they are displaced from each other in the longitudinal direction. Can always be such that the tips of any of the protrusions 26 are in contact with each other. Further, by increasing the vertical height (or width) of the protrusions 26, it becomes difficult for the vertical displacement to occur. Furthermore, a space in which ambient air can enter and exit is formed between adjacent units, and ventilation in the longitudinal direction of the units is particularly good. Since other structures and operations in the second embodiment are the same as those in the first embodiment, description thereof is omitted.

  The present invention has been described in detail with reference to the illustrated embodiments. However, the present invention is not limited to the embodiments, and various modifications can be made without departing from the spirit of the present invention. It goes without saying that various modifications can be made.

  The plate material storage and transport method of the present invention can be used for storage, transport and other handling of plate materials such as floor boards, wall boards, and ceiling boards in houses and general buildings.

One Example of the storage and conveyance method of the board | plate material which concerns on this invention is shown, (A) is a front view, (B) is a top view of (A). The unit of the Example shown in FIG. 1 is shown, (A) is a front view, (B) is a top view of (A). It is the sectional view on the aa line in FIG. The unit in another Example of the storage and conveyance method of the board | plate material which concerns on this invention is shown, (A) is a front view, (B) is a top view of (A). It is the bb sectional view taken on the line in FIG. It is a perspective view which shows an example of the storage and conveyance method of the board | plate material which concerns on a prior art. In FIG. 6, it is explanatory drawing which shows the state which the board | plate material curved in the width direction.

Explanation of symbols

1 block 3 rows 8 units 10 bundles 12 side faces 16 plate material 18 longitudinal direction 20 width direction (direction orthogonal to the longitudinal direction)
22 Vertical direction 24 Corrugated paper (packaging material)
26 Protrusion 28 Tip 30 Space

Claims (1)

  Aligning the longitudinal direction of the plate materials in the same direction, forming a unit by covering a bundle of a plurality of the plate materials stacked in the vertical direction with a packing material, stacking the units in the vertical direction, forming a row, A method for storing and transporting plate members arranged in a direction perpendicular to the longitudinal direction to form a plurality of rows, wherein the packaging material covering the bundle of plate members covers at least a side surface along the longitudinal direction of the bundle and corresponds to the side surface. When the rows have protrusions that bulge outward and the rows are adjacent to each other, the tips of the protrusions abut each other, and a space is formed between the rows so that ambient air can enter and exit. Storage and transportation method for board materials.

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