JP2009045220A - Plastic hollow plate, and method of treating end part of plastic hollow plate - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a plastic hollow plate which is excellent in handleability and safety, and is suitable for a use as a part of furniture as well. <P>SOLUTION: The plastic hollow plate includes a plastic plate body 2 in a hollow structure, roughly straight linear sealing bodies 3 capable of sealing the entire area or the almost entire area of each side forming the opened end part of the plastic plate body 2, and corner connecting bodies 4 disposed between the end parts of the adjacent linear sealing bodies 3 in the state of being capable of connecting the end parts with each other. As the respective linear sealing bodies 3 and the respective corner connecting bodies 4, an outer surface part 33 and a corner outer surface part 44 are applied, which have partially arcuate rounded parts 3a and first corner rounded parts 4a having expansion in the thickness direction, respectively. <P>COPYRIGHT: (C)2009,JPO&amp;INPIT

Description

  The present invention relates to a plastic hollow plate formed by sealing an open end portion of a plastic plate main body, and a plastic hollow plate end processing method.

  Conventionally, a plastic hollow plate excellent in light weight and rigidity has been used in various applications such as building materials and automobile interior materials.

  By the way, since such a plastic hollow plate has been conventionally cut off at the end, it is usually used in connection with inconvenience due to the open end, for example, water, depending on the application. In some cases, there was a problem that water entered the inside from the end.

  Therefore, in order to eliminate such inconvenience, in recent years, a plastic hollow plate in which an end portion of a plastic plate body having a hollow structure is sealed has been devised, developed, and some have already been commercialized.

  In the present invention and the present specification, the “plastic plate body” is a concept including “plastic bubble board”, “plastic corrugated cardboard”, and “plastic folded honeycomb board”.

  “Plastic foam board” is a back sheet that is formed by vacuum forming a large number of cap-shaped protrusions on a sheet extruded from a die, such as a polypropylene resin, and flat on the bottom and top surfaces of the cap sheet. And a molded product obtained by fusing a liner sheet to form a plate having a hollow structure. “Plastic corrugated cardboard” refers to a molded product comprising two sheets formed by melt extrusion of plastic and a large number of ribs that run in parallel by connecting them. The “plastic folded honeycomb board” refers to a molded article having a honeycomb structure formed by giving a vertical portion to a plastic sheet at a predetermined pitch and sequentially folding the plastic sheet in the longitudinal direction.

For example, as shown in Patent Document 1 below, the applicant applies a plastic dressing band having a width equal to the thickness dimension of the plastic plate body while regulating the edges and the outside of the plastic tick plate body from both sides with a pressing plate. A plastic hollow plate that seals the edge by applying a metal pad from the outside to the edge and heating it with a heater from the back through the pad to fuse the decorative band to the edge As shown in the following Patent Document 2, as shown in the following Patent Document 2, the end portion is sealed by softening and crushing the vicinity of the edge of the plastic hollow plate, or as shown in the following Patent Document 3, the plastic plate body A plastic hollow plate in which the end portion is sealed by fusing a plastic tape having a dimension and shape covering the entire end portion of the present invention is invented.
JP 2003-62917 A JP 2005-35071 A JP 2006-346904 A

  However, in the embodiments disclosed in Patent Document 1 and Patent Document 3, the end face of the plastic hollow plate is formed because the end face sealed with a plastic decorative band or tape becomes a vertical face substantially perpendicular to the surface direction of the plastic plate body. Sharp corners are formed over the entire area, and care must be taken when handling such plastic hollow plates. In particular, when used in connection with water, the plastic hollow plate itself or the hand holding the plastic hollow plate itself is easily slipped by getting wet, and further care must be taken in handling.

  On the other hand, in the aspect disclosed in Patent Document 2, a convex portion that is crushed is formed over the entire end portion of the plastic hollow plate, which also impairs the convenience of handling.

  Furthermore, in the aspect shown in Patent Document 1 and Patent Document 3, when a strong impact is applied to the vertical surface of the end portion from the outside, the decorative band or the tape may be peeled off from the plastic hollow plate body, and the end portion is weak. It was possible to invite a change.

  Due to such problems, the conventional plastic hollow plate is not suitable for use as a part of furniture closely adhered to daily life, for example, a lid for a bathtub, a table top or a desk top plate. was there.

  The present invention has been made paying attention to such problems, and the main purpose is to provide a plastic hollow plate that is excellent in handleability and safety and suitable for use as a part of furniture, Moreover, it is providing the edge part processing method of the plastic hollow plate in which a sharp corner | angular part is not formed.

  That is, the plastic hollow plate of the present invention is a substantially straight plastic plate body having a substantially rectangular shape, and a substantially straight line that can seal the entire or substantially entire area of each side that forms the open end of the plastic plate body. Each of the linear sealing bodies, and a corner connecting body arranged in a state where the ends can be connected to each other between the ends of the adjacent linear sealing bodies. A partially arc-shaped rounded portion having a spread in the thickness direction is formed on the outer surface portion of the sealing body and each corner connecting body.

  If it is such, in order to seal the open end of the plastic plate body with a linear sealing body, it is possible to prevent water and dust from entering the inside of the plastic plate body, Since the circular arc-shaped rounded portion extending in the thickness direction is formed on the outer surface portion of each linear sealing body and each corner connecting body surrounding the end portion of the plastic plate body, the plastic hollow plate has the end portion. Covers for bathtubs and tables that were difficult to apply with conventional products with rounded corners, superior handling and safety compared to conventional products, and sharp corners. It is also suitable for use as a part of furniture closely related to daily life, such as a top board of furniture with a top board. And the favorable rigidity of the edge part of a plastic hollow plate is securable by the partial circular arc-shaped part which spreads in the thickness direction. Moreover, if the linear sealing body and the corner connection body are made of resin, it is possible to avoid the weight of the entire plastic hollow plate.

  Preferred embodiments of the linear sealing body and the corner connector include those provided with the rounded portions at both end portions along the thickness direction, and those provided with the rounded portions substantially over the entire thickness direction. Is mentioned.

  In particular, if the corner connector has a second arcuate portion having a partial arc shape extending in the surface direction (in other words, a direction orthogonal to the thickness direction), the corner of the plastic hollow plate is also rounded. With a tinged shape, handling is further improved.

  When the plastic plate body is formed of a plurality of or a single sheet material, the radius of curvature r of each rounded portion and the thickness dimension t of the sheet material are set to values satisfying [r ≧ t]. The mode to set is preferable.

  Furthermore, it is desirable to set the curvature radius R of the second rounded portion and the thickness dimension T of the plastic plate body to values satisfying [R ≧ T].

  In addition, it is preferable that the dimension W along the direction orthogonal to the longitudinal direction of the linear sealing body and the thickness dimension T of the plastic plate body are set to values satisfying [W ≧ T].

  By setting to a value that satisfies such a relative relationship, it is possible to avoid that each rounded portion and the second rounded portion are as close as possible to a straight line, and the end of the plastic hollow plate is appropriately rounded. It can be tinged.

  In order to assemble the linear sealing body and the corner connecting body integrally, a first engaging portion is provided in the linear sealing body, and a second engaging portion is engageable with the first engaging portion. What is necessary is just to set it as the aspect which provides an engaging part and engages these engaging parts mutually.

  Furthermore, if the linear sealing body and the corner connection body are hollow, the overall weight of the plastic hollow plate can be reduced.

  The plastic hollow plate end processing method according to the present invention is applied when sealing the end of a hollow plastic plate body having a substantially rectangular shape, and the end of the plastic plate main body. A step of adhering a linear sealing body having a partially arc-shaped rounded portion extending in the thickness direction on each side forming the outer surface and having substantially the same longitudinal dimension as each of the sides; A step of attaching a corner connector having a rounded portion having the same shape as the rounded portion between the end portions of the adjacent linear sealed bodies after adhering the shaped sealed body or in the previous stage of bonding And the open end portion of the plastic plate body is sealed and the entire end portion is rounded.

  Here, “adhering” means “adhering each base material in contact with each other in a state of being dissolved in a solvent”, “adhering members through an adhesive”, or “adhering each member to heat. It is a concept that includes any of these aspects, "attaching by bringing them into contact with each other in a melted state".

  With such an end treatment method, it is possible to form a plastic hollow plate whose end is sealed by a simple procedure, and the entire end is rounded so that it is easy to handle and safe. It becomes an excellent plastic hollow plate and is suitable for use as a part of furniture.

  As described above, according to the present invention, a sharp hollow portion is not formed, the plastic hollow plate is excellent in handling and safety, and is suitable for use as a part of furniture, and the end portion of the plastic hollow plate A processing method can be provided.

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

  As shown in FIG. 1, the plastic hollow plate 1 is a substantially straight plastic plate body 2 and a substantially straight line that can seal the whole or substantially the whole area of each side that forms the open end of the plastic plate body 2. A resin-made linear sealing body 3 and a resin-made corner connecting body 4 arranged in a state in which these end portions can be connected to each other between the end portions of adjacent linear sealing bodies 3. It is provided.

  In the present embodiment, a “plastic bubble board” is applied as the plastic plate body 2. As shown in FIG. 2, the plastic plate main body 2 includes a cap sheet 21 having a large number of cap-shaped protrusions, a flat back sheet 22 disposed on the bottom surface side and the top surface side so as to sandwich the cap sheet 21, and It is a three-layered structure integrally provided with the liner sheet 23. Since the plastic plate body 2 is cut into an appropriate size in the manufacturing process, the end portion is opened.

  Next, the linear sealing body 3 and the corner connection body 4 will be described. The “inner end” and the “base end” used below in describing the linear sealing body 3 and the corner connection body 4 are “an end relatively closer to the end of the plastic plate body 2”. “Outward end” and “tip” refer to “an end relatively far from the end of the plastic plate body 2”.

  As shown in FIGS. 3 to 5, the linear sealing body 3 can be joined in a state where the inner end portion is abutted against the end portion of the plastic plate main body 2, and the outer end portion has a thickness direction. A partially arc-shaped rounded portion 3a having a spread is formed. The linear sealing body 3 of the present embodiment has a hollow shape, and a surface portion 31 that is substantially flush with the surface (liner sheet 23) of the plastic plate main body 2 in a state of being joined to the end of the plastic plate main body 2. The back surface portion 32 that is substantially flush with the back surface (back sheet 22) of the plastic plate body 2 and the outer surface portion 33 that connects the front surface portion 31 and the outer ends of the back surface portion 32 are provided. The linear sealing body 3 includes, in the outer surface portion 33, partial arc-shaped round portions 3 a each having a spread in the thickness direction in a region near the boundary with the front surface portion 31 and a region near the boundary with the back surface portion 32. (See FIGS. 4 and 5). Furthermore, the closing part 34 which can close | close the opening part open | released to the longitudinal direction is provided in the longitudinal direction both ends of the linear sealing body 3, and the 1st engaging part 35 is provided in each closing part 34, respectively. In this embodiment, the 1st engaging part 35 is comprised by the 1st convex part 35a protruded in the longitudinal direction of the linear sealing body 3, and the 1st recessed part 35b dented. The first recess 35 b of the present embodiment is a hole that penetrates the blocking portion 34 in the thickness direction. In this embodiment, as the linear sealing body 3, a resin-made integrated product by injection molding is applied.

  As shown in FIGS. 6 and 7, the corner connector 4 is substantially fan-shaped with a partially arc-shaped second corner radius portion 4 b (corresponding to the “second radius portion” of the present invention) that extends in the plane direction. (More specifically, one-quarter arc shape). The corner connection body 4 is hollow and has a corner surface portion 41 that is substantially flush with the surface portion 31 of the linear sealing body 3 in a state of being connected to the end of the linear sealing body 3, and a linear shape. The corner back surface portion 42 that is substantially flush with the back surface portion 32 of the sealing body 3 and the edge portions of the edge portions of the corner surface portion 41 and the corner back surface portion 42 are connected to each other, and the end portion of the linear sealing body 3 A pair of facing portions 43 that can face (specifically, the blocking portion 34), and a corner outer surface portion 44 that connects the arc-shaped portions of the edges of the corner surface portion 41 and the corner back surface portion 42. It is. Then, in the corner outer surface portion 44, the first corner radius having the same shape as the radius portion 3 a of the linear sealing body 3 is respectively formed in the region near the boundary with the corner surface portion 41 and the region near the boundary with the corner back surface portion 42. A portion 4a is formed (see FIG. 7). Furthermore, a second engagement portion 45 that can be engaged with the first engagement portion 35 of the linear sealing body 3 is provided on each facing portion 43. In the present embodiment, the second engaging portion 45 is constituted by a second concave portion 45a that can be engaged with the first convex portion 35a and a second convex portion 45b that can be engaged with the first concave portion 35b. Yes. The second recess 45 a of the present embodiment is a hole that penetrates in the thickness direction of the facing portion 43. In the present embodiment, an integrated product by injection molding is applied as the corner connector 4.

In the present embodiment, when the curvature radii of the rounded portion 3a and the first corner rounded portion 4a are r, the curvature radii r and the respective sheet materials (cap sheet 21, back sheet 22, liner) constituting the plastic plate main body 2 are used. The relative relationship of the thickness dimension t (see FIG. 2) of the sheet 23) is set to satisfy the following equation [1].
r ≧ t Formula [1]
When the radius of curvature of the second corner radius portion 4b is R, the relative relationship between the radius of curvature R and the thickness dimension T of the plastic plate body 2 (see FIG. 2) satisfies the following equation [2]. Is set.
R ≧ T (2)
Furthermore, the relative relationship between the dimension W (see FIG. 3) along the direction orthogonal to the longitudinal direction (in other words, the short dimension direction) of the linear sealing body 3 and the thickness dimension T of the plastic plate body 2 is The relation satisfying the following equation [3] is set.
W ≧ T (3)
Next, the assembly procedure of the plastic hollow plate 1 according to this embodiment will be described.

  First, the end of the plastic plate body 2 and the base end of the linear sealing body 3 are bonded. As an adhesion method between the end of the plastic plate main body 2 and the base end of the linear sealing body 3, the end of the plastic plate main body 2 and the base end of the linear sealing body 3 are dissolved in a solvent. A mode in which they are brought into contact with each other, a mode in which the end portion of the plastic plate body 2 and the base end portion of the linear sealing body 3 are bonded through an adhesive, or the end portion and the wire of the plastic plate body 2 A mode in which the base end portions of the cylindrical sealing body 3 are brought into contact with each other while being melted by heat is exemplified. The linear sealing body 3 is integrally joined to each side which is an end portion of the plastic plate body 2 by an adhesion method appropriately selected from these. When adhering, it is preferable to press the linear sealing body 3 toward the end of the plastic plate main body 2. In this embodiment, as shown in FIGS. 8 and 9, the linear sealing body 3 is pressed. By moving the body 3 toward the end of the plastic plate main body 2, the linear sealing body 3 is pressed against the end of the plastic plate main body 2, and the linear sealing body 3 is moved to the end of the plastic plate main body 2. It is made to adhere to the part. In addition, the linear sealing body 3 of this embodiment sets the base part site | part of the surface part 31 and the back surface part 32 more thickly than each other part, and can endure the pressing force at the time of adhesion | attachment. .

  Then, after the linear sealing body 3 is bonded, or in the previous stage of bonding, the corner connector 4 is attached between the end portions of the adjacent linear sealing bodies 3. This attachment work is performed by the first engagement portion 35 provided at the end portion (specifically, the closing portion 324) of the linear sealing body 3 and the second engagement portion 45 provided at the facing portion 43 of the corner connector 4. By engaging each other.

  The second engaging portion 45 is provided only on one facing portion 43 of the facing portions 43 forming a pair of the corner connecting bodies 4, and the second engaging portion 45 and the end of the linear sealing body 3 are provided. The provided first engaging portion 35 is engaged with the concave and convex portions, and the other facing portion 43 is attached to the end portion of the linear sealing body 3 by other means such as the above-described various types of bonding (adhesion using a solvent, adhesive). It is also possible to form an embodiment in which they are integrally joined by bonding or thermal fusion using the In this case, the first engaging portion may not be provided at the end of the linear sealing body 3 that faces the other facing portion 43.

  In addition, as an assembling procedure, before joining all the linear sealing bodies 3 to each side of the plastic plate main body 2, one of the combinations of the opposing linear sealing bodies 3 is connected to the plastic plate. By joining the opposite sides of the main body 2 respectively, and then attaching the corner connector 4 to both ends in advance and joining the other set of linear sealing bodies 3 to the remaining sides of the plastic plate main body 2, respectively. You may make it arrange | position the corner connection body 4 between the edge parts of the adjacent linear sealing body 3. FIG. Or after attaching the edge parts of the linear sealing body 3 to the corner connection body 4 beforehand and assembling a square frame, the base end part of the linear sealing body 3 is set to each side of the plastic plate body 2. You may make it join.

  The plastic hollow plate 1 formed by sealing the open end portion of the plastic plate body 2 with the sealing body 3 through the above procedure is sealed at the end portion. Can be prevented, and the sealed end is rounded by the rounded portion 3a and the first corner rounded portion 4a, and the four corners are rounded by the second corner rounded portion 4b. Therefore, the plastic hollow plate has excellent handleability compared with the conventional one in which sharp corners are formed in the entire end portion of the plastic hollow plate, and the characteristics of the plastic hollow plate that has been noticed so far, In addition to lightness and rigidity, it also has safety and can be used for general purposes.

  The plastic hollow plate 1 having such advantages can be applied as a lid for a bathtub, for example. When applied as a lid for a bathtub, it is possible to prevent water from entering the inside of the plastic plate main body 2 as well as the hand when trying to grip the end of the plastic hollow plate 1 with a wet hand. If the plastic hollow plate 1 is accidentally dropped on the foot, the plastic hollow plate can be avoided even if the hand or finger is torn by sharp corners. If the part touching the foot of 1 is rounded, it is possible to avoid a situation where the foot is lacerated by the sharp corners, which is highly safe and practical.

  Such a plastic hollow plate 1 can be applied to, for example, a table top or a desk top (for example, a kotatsu top) in addition to the above-described lid for a bathtub. The end of the top plate is usually formed with a substantially vertical surface, but the plastic hollow plate 1 according to the present embodiment is rounded over the entire end, so that the conventional top plate Compared with, it is excellent in safety. In addition, due to its light weight, the top plate can be easily lifted when laying a bedding on the support structure (specifically, the main body of the kotatsu) that supports the top plate or cleaning the laid futon, contributing to workability. . In addition, when applying the plastic hollow plate 1 as a top plate, a frictional resistance is provided between the back surface portion of the plastic hollow plate 1 and a member (for example, a support structure that supports the top plate) in contact with the back surface portion. By providing a frictional resistance part for causing the occurrence of the problem, the top plate can be prevented from slipping carelessly.

  Thus, the plastic hollow plate 1 according to the present embodiment constitutes a frame body that encloses and seals the end of the plastic plate body 2 with the linear sealing body 3 and the corner connection body 4, and each linear sealing body The outer surface portions 33 and 44 of the stop body 3 and each corner connecting body 4 are formed with a partially arc-shaped rounded portion 3a and a first corner rounded portion 4a each having a spread in the thickness direction. No sharp corners are formed over the entire end, which is superior in handling and safety compared to conventional ones, and has been difficult to apply with conventional plastic hollow plates. It can be applied as a part of furniture closely related to daily life, such as a table top, and is versatile.

  In addition, the rounded portion 3a and the first corner rounded portion 4a having a spread in the thickness direction can ensure good rigidity of the end portion of the plastic hollow plate 1 and the entire end portion is rounded. Accordingly, it is possible to effectively improve the appearance of the plastic hollow plate 1. Furthermore, the plastic hollow plate 1 according to the present embodiment, in which the gap formed between the end portions of the adjacent linear sealing bodies 3 by the corner connecting bodies 4 is packed, is compatible by modularizing each unit. Can also be secured.

  In particular, since the corner connection body 4 includes the second arcuate part 4b having a partial arc shape extending in the surface direction, the second corner arc part 4b and the first corner arc part 4 are provided on the corner connection body 4 itself. The three-dimensional roundness composed of the portion 4a can be rounded, and the handling property and safety are further improved. When connected, the end of one linear encapsulant 3 and the end of the other linear encapsulant 3 are continuous in a curved shape via the corner connector 4 to improve the appearance. Also contribute.

  Furthermore, the linear sealing body 3 and the corner connection body 4 are separate from each other, and the first engagement portion 35 is provided on one side of the linear sealing body 3, and the corner connection body 4 has the first Since the second engagement portion 45 that can be engaged with the engagement portion 35 is provided, the engagement portions (the first engagement portion 35 and the second engagement portion 45) can be simply engaged with each other. The linear sealing body 3 and the corner connection body 4 can be assembled | attached integrally by an operation | work.

  In particular, the respective curvature radii r of the rounded portion 3a and the first corner rounded portion 4a, the curvature radius R of the second corner rounded portion 4b, and the dimension W along the short dimension direction of the linear sealing body 3 are respectively represented by the above formulas. Since the values satisfying [1], [2], and [3] are set, the rounded portions 3a, 32a, and 32b are prevented from becoming a shape that is almost as straight as possible, and the plastic hollow plate 1 Appropriate roundness can be applied to the entire end.

  Since the linear sealing body 3 and the corner connector 4 are hollow, the overall weight of the plastic hollow plate 1 can be reduced without significantly impairing the light weight of the plastic plate body 2 itself.

  Moreover, the edge part processing method of the plastic hollow plate 1 which concerns on this embodiment makes the outer surface part 33 the partial arc-shaped round | angular part 3a which spreads in the thickness direction in each edge | side which forms the edge part of the plastic plate main body 2. FIG. And adhering linear sealing bodies 3 having substantially the same longitudinal dimension as each side, and after adhering these linear sealing bodies 3 or in the previous stage of adhering, adjacent linear seals The plastic plate body 2 was opened by passing through a step of attaching the corner connecting body 4 having the first corner rounded portion 4a having the same shape as the rounded portion 3a between the end portions of the stationary body 3 to the corner outer surface portion 44. Since the end portion is sealed and the entire end portion is rounded, the plastic hollow plate 1 with the end portion sealed can be formed by a simple procedure, and the end portion as described above. The whole area is rounded With Vita shape, handling properties, and plastic hollow plate 1 becomes excellent in safety, and those suitable for use as part of the furniture.

  The present invention is not limited to the embodiment described in detail above.

  For example, as shown in FIGS. 10 and 11, the linear sealing body X31 and the corner connector X32 are provided with a rounded portion X31a and a first corner rounded portion X32a over substantially the entire area along the thickness direction. Also good. In addition, in the linear sealing body X31 and the corner connector X32 shown in FIGS. 10 and 11, the parts corresponding to the above embodiment are given the same reference numerals with “X” and “Y” at the head. is doing.

  Further, as shown in FIG. 12, the hollow linear sealing body Y3 has an inner standing portion Y36 that connects the vicinity of the base end portion (inward end portion) between the front surface portion Y31 and the back surface portion Y32. It may be provided. Thereby, although it is a hollow linear sealing body, the intensity | strength by the side of a base end part over the whole longitudinal direction can be raised effectively. In addition, in FIG. 12, although the linear sealing body Y3 which has the rounded part Y3a in the substantially whole area along the thickness direction was illustrated, the linear sealing body shown in the said embodiment (each at both ends along the thickness direction) Of course, it does not matter as a mode in which an inwardly standing portion is provided on a portion provided with a rounded portion. Of course, it is good also as an aspect which provided the above-mentioned inward standing part while providing the said obstruction | occlusion part in the both ends opened along the longitudinal direction among the linear sealing bodies.

  In the above embodiment and FIGS. 10 to 12, the hollow linear sealing body and the corner connection body are shown. However, as the linear sealing body and the corner connection body, solid block-shaped objects are applied. May be.

  In addition, a long linear sealing body having an equal cross-sectional shape is prepared in advance, and in the assembly process at the site or production line, the linear sealing body is selected according to the length of the side of the plastic plate body. You may employ | adopt the aspect of cutting to a predetermined dimension. If it is such, it can respond also to the length of the side of the plastic board main body of all sizes. In this case, what is necessary is just to provide a 1st engaging part in the both ends or any one edge part of the cut | disconnected linear sealing body. If the linear sealing body is hollow, the first engaging portion can be provided by using the closed portion if the closed portion described in the above embodiment is provided at both cut ends. it can.

  Further, the first engaging portion is constituted by a single first convex portion or a single first concave portion, while a single second concave portion capable of engaging the second engaging portion with the first convex portion, Or you may comprise by the single 2nd convex part engageable with a 1st recessed part. Further, in order to ensure the engagement between the first engagement portion and the second engagement portion, a hook hole is applied as one engagement portion, and a hook that can be elastically engaged with the hook hole as the other engagement portion. You may apply nails. Moreover, you may apply the surface fastener which can mutually engage as a 1st engaging part and a 2nd engaging part.

  Moreover, in the said embodiment, when the linear sealing body was a hollow thing, although the aspect which formed the 1st engaging part in the obstruction | occlusion part provided in both ends was illustrated, as a linear sealing body, You may form a 1st engaging part in a surface part, a back surface part, an outer surface part, or an inward standing part. In this case, if the thickness dimension of the part forming the first engagement part among the front surface part, the back surface part, the outer surface part, or the inner standing part is set larger than the thickness dimension of the other part, the first It contributes to the improvement of the strength of the engaging portion (particularly the convex portion) itself, and consequently the assembly strength.

  Moreover, it is good also as an aspect which only joins a linear sealing body and a corner connection body by the adhesion | attachment mentioned above, In that case, as a linear sealing body and a corner connection body, the said 1st engaging part and the above-mentioned What does not have each 2nd engaging part should just be applied.

  Furthermore, as the shape of each outer surface portion of the linear sealing body and the corner connection body, a substantially wave shape in which three or more partial arc-shaped round portions extending in the thickness direction may be employed.

  Further, when the longitudinal dimension of the linear sealing body is slightly larger or smaller than the side of the plastic plate body, the error may be opposed to the end of the linear sealing body in the corner connection body. You may set so that a part may be absorbed by making it protrude or dent to the edge part side of a linear sealing body.

  Although FIG. 1 illustrates a substantially square plastic plate body, other rectangular plastic plate bodies such as a substantially rectangular shape may be applied. In this case, what is necessary is just to set the longitudinal dimension of each linear sealing body to the length corresponding to each edge | side of a plastic board main body.

  Of course, the above-mentioned “plastic corrugated cardboard” or “plastic folded honeycomb board” may be applied as the plastic plate body instead of the “plastic bubble board”.

  In addition, the specific configuration of each part is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.

The figure which shows typically the whole plastic hollow plate which concerns on one Embodiment of this invention. The figure which shows typically a part of plastic plate main body in the embodiment. The figure which abbreviate | omits some linear sealing bodies in the embodiment, and shows typically. The A direction arrow directional view of FIG. FIG. 4 is a sectional view taken along line BB in FIG. 3. The figure which shows the corner connection body in the same embodiment typically. The C direction arrow directional view of FIG. The figure for demonstrating the edge part processing method of the plastic hollow plate which concerns on one Embodiment of this invention. The figure which shows the next process of FIG. 8 typically. The figure which shows the modification of the linear sealing body which concerns on the embodiment corresponding to FIG. The figure which shows the modification of the corner connection body which concerns on the embodiment corresponding to FIG. The figure which shows the other modification of the linear sealing body which concerns on the embodiment corresponding to FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Plastic hollow plate 2 ... Plastic board main body 3, X3, Y3 ... Linear sealing body 3a, X3a, Y3a ... Earl part 33, X33, Y3 ... Outer surface part 35 ... 1st engaging part 4 ... Corner connection body 4a ... Earl part (1st corner Earl part)
4b ... 2nd R part (2nd corner R part)
43 ... facing part 44 ... outer surface part (corner outer surface part)
45. Second engaging portion

Claims (10)

A hollow plastic plate body having a generally rectangular shape;
A linear sealing body having a substantially linear shape capable of sealing the entire region of each side or the substantially entire region forming the open end of the plastic plate body;
Between the end portions of the adjacent linear sealing bodies, comprising a corner connection body arranged in a state where these end portions can be connected to each other,
A plastic hollow plate, characterized in that a partially arc-shaped rounded portion extending in the thickness direction is formed on the outer surface of each of the linear sealing bodies and the corner connecting bodies. The plastic hollow plate according to claim 1, wherein each of the linear sealing bodies and each corner connecting body includes the rounded portions at both end portions along the thickness direction. 2. The plastic hollow plate according to claim 1, wherein each of the linear sealing bodies and each corner connecting body includes the rounded portion in substantially the entire region along the thickness direction. The plastic hollow plate according to claim 1, 2 or 3, wherein the corner connecting body includes a second arcuate portion having a partial arc shape extending in a surface direction. The plastic plate body is formed from a plurality of or a single sheet material, and the radius of curvature of the rounded portion and the thickness dimension of the sheet material are set to values satisfying the formula [1]. The plastic hollow plate according to 2, 3 or 4.
r ≧ t Formula [1]
Where r: radius of curvature of the radius part,
t: Thickness dimension of the sheet material. The plastic hollow plate according to claim 4, wherein the radius of curvature of the second rounded portion and the thickness dimension of the plastic plate main body are set to values satisfying the formula [2].
R ≧ T (2)
Where R: radius of curvature of the second radius part,
T: Thickness dimension of the plastic plate body. The dimension along the direction orthogonal to a longitudinal direction among the said linear sealing bodies and the thickness dimension of the said plastic board main body are set to the value which satisfy | fills Formula [3]. Or the plastic hollow plate of 6.
W ≧ T (3)
Here, W: the dimension along the direction orthogonal to the longitudinal direction of the linear sealing body,
T: Thickness dimension of the plastic plate body. A first engagement portion is provided in the linear sealing body, and a second engagement portion that can be engaged with the first engagement portion is provided in the corner connection body. The plastic hollow plate according to 5, 6 or 7. The plastic hollow plate according to claim 1, 2, 3, 4, 5, 6, 7 or 8, wherein the linear sealing body and the corner connecting body are hollow. It is an end processing method of a plastic hollow plate applied when sealing an end of a plastic plate body of a hollow structure having a substantially rectangular shape,
A linear sealing body having a partially arc-shaped rounded portion extending in a thickness direction on each side forming an end portion of the plastic plate main body on an outer surface portion and having substantially the same longitudinal dimension as each side. Bonding the
After bonding these linear sealing bodies, or in the pre-bonding stage, a corner connection body having a rounded portion having the same shape as the rounded portion on the outer surface portion between the end portions of the adjacent linear sealing bodies. By going through the attaching process,
A method for treating an end portion of a plastic hollow plate, wherein the open end portion of the plastic plate body is sealed and the entire end portion is rounded.

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