JP4129652B2

JP4129652B2 - Core material

Info

Publication number: JP4129652B2
Application number: JP13128098A
Authority: JP
Inventors: 明海中山
Original assignee: 有限会社イワタ通商
Priority date: 1998-04-23
Filing date: 1998-04-23
Publication date: 2008-08-06
Anticipated expiration: 2018-04-23
Also published as: JPH11300861A

Description

【０００１】
【発明の属する技術分野】
本発明は、紙管を利用した芯材、特に建築物用として好適な芯材に関する。
【０００２】
【従来の技術】
従来、新聞印刷用の巻胴など、各種工場で用いられた使用済みの紙管は、産業廃棄物として処分されていた。また、リサイクル運動の高まりにより古紙の回収も盛んで、近年古紙もだぶつき傾向にあり、その有効利用が望まれている。
【０００３】
【発明が解決しようとする課題】
そこで本発明は、従来産業廃棄物として処理されていた使用済みの紙管や古紙から再生した紙管を利用した芯材を提供することを目的とする。
【０００４】
【課題を解決するための手段】
上記課題を解決するために、本発明の芯材は、同一長さに切断した多数の紙管を板材間に並列に配置し、前記板材と前記紙管との接触部を接着した基材を設け、該基材を所定幅間隔で厚さ方向に切断してなる芯材を１次芯材とし、該１次芯材を枠状に組み立てて一体化したこと、を特徴としている。
本発明の他の態様による芯材は、同一長さに切断した多数の紙管を板材間に並列に配置し、前記板材と前記紙管との接触部を接着した基材を設け、該基材を所定幅間隔で厚さ方向に切断してなる芯材を１次芯材とし、該１次芯材を、その紙管を横向きにして枠状に組み立てて一体化したこと、を特徴としている。
本発明のさらに他の態様による芯材は、同一長さに切断した多数の紙管を板材間に並列に配置し、前記板材と前記紙管との接触部を接着した基材を設け、該基材を所定幅間隔で厚さ方向に切断してなる芯材を１次芯材とし、該１次芯材を、その紙管を横向きにして面状に敷きつめて一体化したこと、を特徴としている。
【０００５】
【発明の実施の形態】
以下、本発明の実施の形態を具体的に説明する。図１は本発明における基材の一部破断斜視図、図２は図１の一部破断平面図、図３は芯材の説明図で同図（ａ）は図２の IIIａ− IIIａ線による芯材の側面図，同図（ｂ）は同図（ａ）のｂ−ｂ線断面図、図４は４枚の板材の各板材間に紙管を配置し一体化した基材を用いた場合の図３（ａ）相当の側面図、図５は１次芯材をその紙管を横向きにして枠状に組み立てて一体化した枠状の芯材の平面図、図６は１次芯材をその紙管を横向きにして面状に敷きつめて一体化した面状の芯材の平面図、図７は各紙管を互いに接触状態で配置した場合の図２相当の一部破断平面図、図８は各紙管を互いに離間させて配置した場合の図２相当の一部破断平面図である。
【０００６】
本発明の芯材１は、軸方向に同一長さに切断した多数の紙管２を、例えば２枚の板材３，３間に、紙管２の軸方向を板材３の面方向に対して直交方向に並列に配置し、各板材３と各紙管２との接触部４を接着剤により接着して一体化した基材５を設け、この基材５を所定幅Ｌ間隔で仮想線で示す切断線６に沿って基材５の厚さＨ方向に切断してなる。
【０００７】
板材３としては、木質の単板や合板、プラスチック板、金属板など材質は特に限定されないが、切断の容易さ、接着剤による紙管２との接着力が強くコスト的にも有利な木質材が好ましい。紙管２としては使用済みの紙管又は古紙から再生した紙管（再生紙管）を用い、その有効利用を図る。紙管２の形状は各図に示すような円紙管が一般的であるが、角紙管でもよい。板材３との接触面積を確保して所要の結合強度を持たせるとともに、芯材１における紙管２の強度部材としての役割を活かすため、ある程度厚みのある紙管が好ましい。紙管２の繊維方向は板材３の面方向と直交方向であるため、接着剤が毛管現象により接触面から多少内部にまで浸透し、板材３と紙管２とを強固に接着できる。基材５切断の所定幅Ｌは、一定幅でもよく、必要に応じ異なる幅としてもよい。
【０００８】
板材として２枚の板材３，３を用いた場合、芯材１は、図３に示すように、両側の柱材３ａ，３ａ間に適宜の間隔で紙管２が介在する梯子状の形態となる。柱材３ａ，３ａ間に介在する紙管２は、基材５における板材３，３間に配置する紙管２の配列の仕方や基材５の切断位置によりその形状が異なるが、強度部材としての役割を担い、上述のように板材３と紙管２とは強固に接着されるので、芯材１に所要の強度をもたせることができる。紙管２と紙管２との間は空間であるので、軽量な芯材１を得る。また、紙管２は均質であるので、芯材１にねじれが生じにくい。
【０００９】
なお、図１〜図３に示した基材５、芯材１における各部材の寸法は、板材３の厚さが１５ｍｍ、紙管２の内径８０ｍｍ，外径１２０ｍｍ，厚さ２０ｍｍ、紙管２の軸方向の長さ（Ａ）４０ｍｍ、基材５の切断幅Ｌが１５ｍｍ、基材５の厚さＨが７０ｍｍであった。勿論これらの寸法は一例であって、所望により適宜の寸法とすることができる。
【００１０】
基材５を構成する板材３として３枚以上の板材３を用いることもでき、例えば４枚の板材３を用い、各板材３，３間に多数の紙管２を並列に配置し、各板材３と各紙管２とを一体化した基材５を、所定幅Ｌ間隔で厚さＨ方向に切断してなる芯材１の図３（ａ）相当の側面図を図４に示す。図４では、各板材３，３間に配置する紙管２の軸方向の長さＡ₁，Ａ₂，Ａ₃が同一の場合を示したが、Ａ₁，Ａ₂，Ａ₃が異なってもよい。多数の板材３を用い、各板材３，３間に紙管２を配置した基材５から形成される芯材１は、面状の芯材１となる。
【００１１】
本発明の他の態様による芯材７は、上記芯材１を１次芯材１ａとし、該１次芯材１ａを、所望の寸法の枠状に組み立てて一体化した枠状の芯材７である。一体化するには、各１次芯材１ａの接触部８を接着剤により接着等すればよい。ここで、図５に示すように、上記１次芯材１ａを、その紙管２を横向きにして枠状に組み立てて一体化すれば、基材５の厚さＨに左右されることなく、基材５の切断幅Ｌに応じた厚さの枠状の芯材７を得ることができる。この場合の枠状の芯材７における紙管２の向きは枠状の芯材７の面方向になる。なお、各１次芯材１ａを、その紙管２を縦向きにして（図５における各１次芯材１ａを紙面に対して９０°起こして）枠状に組み立てて一体化してもよい（図示せず）。この場合の枠状の芯材７における紙管２の向きは枠状の芯材７の厚さ方向になる。
【００１２】
本発明のさらに他の態様による芯材９は、上記芯材１を１次芯材１ａとし、該１次芯材１ａを所望の寸法の面状に敷きつめて一体化した面状の芯材９である。一体化するには、上記と同様、各１次芯材１ａの接触部８を接着剤により接着等すればよい。ここで、図６に示すように、上記１次芯材１ａを、その紙管２を横向きにして面状に敷きつめて一体化すれば、基材５の厚さＨに左右されることなく、基材５の切断幅Ｌに応じた厚さの面状の芯材９を得ることができる。この場合の面状の芯材９における紙管２の向きは面状の芯材９の面方向になる。
【００１３】
板材３，３間に配置する紙管２は、図２においては、同図の左右方向には互いに接触状態でかつ上下方向には所定間隔Ｄをもって配置した場合を示したが、これに限らず、例えば図７に示すように各紙管２を互いに接触状態で配置してもよく、例えば図８に示すように各紙管２を互いに離間させて配置するようにしてもよい。いずれの場合も、板材３，３間に紙管２が介在するように基材５を所定幅Ｌ間隔で切断する。各図では、同一径、同一厚さの紙管２を用いた場合を示したが、軸方向の長さが同一であれば、径や厚さの異なる紙管２を用いるようにしてもよい。
【００１４】
上記した本発明における芯材１，７，９は、襖やフラッシュドアなどの建具、床や壁などのパネル材、その他各種建築物用の芯材として好適である。
【００１５】
【発明の効果】
以上説明したように本発明の芯材によれば、紙管と板材とが強固に接着され、軽量で所要の強度を有し、またねじれの生じにくい芯材を得ることができる。
また、上記した芯材を１次芯材とし、該１次芯材を、その紙管を横向きにして枠状に組み立てて又は面状に敷きつめて一体化すれば、基材の厚さに左右されることなく、基材の切断幅に応じた厚さの枠状の芯材又は面状の芯材を得ることができる。
【図面の簡単な説明】
【図１】本発明における基材の一部破断斜視図。
【図２】図１の一部破断平面図。
【図３】芯材の説明図。
【図４】図４は４枚の板材の各板材間に紙管を配置し一体化した基材を用いた場合の図３（ａ）相当の側面図。
【図５】１次芯材をその紙管を横向きにして枠状に組み立てて一体化した枠状の芯材の平面図。
【図６】１次芯材をその紙管を横向きにして面状に敷きつめて一体化した面状の芯材の平面図。
【図７】各紙管を互いに接触状態で配置した場合の図２相当の一部破断平面図。
【図８】各紙管を互いに離間させて配置した場合の図２相当の一部破断平面図。
【符号の説明】
１芯材
１ａ１次芯材
２紙管
３板材
３ａ柱材
４接触部
５基材
６切断線
７枠状の芯材
８接触部
９面状の芯材
Ａ紙管の軸方向長さ
Ｄ紙管と紙管との間隔
Ｈ基材の厚さ
Ｌ所定幅[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a core material using a paper tube, and more particularly to a core material suitable for a building.
[0002]
[Prior art]
Conventionally, used paper tubes used in various factories such as a roll for newspaper printing have been disposed of as industrial waste. In addition, the collection of used paper is flourishing due to the increasing recycling movement, and in recent years, there is a tendency for used paper to spill over, and its effective use is desired.
[0003]
[Problems to be solved by the invention]
Accordingly, an object of the present invention is to provide a core material using a used paper tube or a paper tube regenerated from used paper that has been conventionally treated as industrial waste.
[0004]
[Means for Solving the Problems]
In order to solve the above problems, the core material of the present invention is a base material in which a large number of paper tubes cut to the same length are arranged in parallel between the plate materials, and the contact portions between the plate materials and the paper tubes are bonded. And a core material obtained by cutting the base material in the thickness direction at predetermined width intervals is used as a primary core material, and the primary core material is assembled and integrated into a frame shape .
A core material according to another aspect of the present invention includes a base material in which a large number of paper tubes cut to the same length are arranged in parallel between plate materials, and a contact portion between the plate material and the paper tube is bonded. A core material obtained by cutting the material in the thickness direction at a predetermined width interval is used as a primary core material, and the primary core material is integrated and assembled in a frame shape with the paper tube facing sideways. Yes.
A core material according to still another aspect of the present invention is provided with a base material in which a large number of paper tubes cut to the same length are arranged in parallel between plate materials, and a contact portion between the plate material and the paper tube is bonded, A core material obtained by cutting the base material in the thickness direction at a predetermined width interval is used as a primary core material, and the primary core material is integrated by laying in a sheet shape with the paper tube facing sideways. It is said.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be specifically described. 1 is a partially broken perspective view of a substrate according to the present invention, FIG. 2 is a partially broken plan view of FIG. 1, FIG. 3 is an explanatory view of a core material, and FIG. 1 (a) is taken along line IIIa-IIIa of FIG. The side view of the core material, FIG. 4B is a cross-sectional view taken along the line bb of FIG. 4A, and FIG. 4 uses a base material in which a paper tube is arranged and integrated between each of the four plate materials. Fig. 5 is a side view corresponding to Fig. 3 (a), Fig. 5 is a plan view of a frame-shaped core material obtained by assembling the primary core material into a frame shape with its paper tube facing sideways, and Fig. 6 is a primary core. FIG. 7 is a partially broken plan view corresponding to FIG. 2 when the paper tubes are arranged in contact with each other. FIG. 8 is a partially broken plan view corresponding to FIG. 2 when the paper tubes are arranged apart from each other.
[0006]
The core material 1 of the present invention comprises a large number of paper tubes 2 cut to the same length in the axial direction, for example, between two plate materials 3 and 3, and the axial direction of the paper tube 2 with respect to the surface direction of the plate material 3. A base material 5 which is arranged in parallel in the orthogonal direction and is integrated by bonding the contact portions 4 of the respective plate members 3 and the respective paper tubes 2 with an adhesive is provided, and the base material 5 is indicated by imaginary lines at a predetermined width L interval. The substrate 5 is cut along the cutting line 6 in the thickness H direction.
[0007]
There are no particular limitations on the material of the plate material 3 such as a wood veneer, plywood, plastic plate, metal plate, etc., but it is easy to cut and has a strong adhesive force with the paper tube 2 by an adhesive and is advantageous in cost. Is preferred. As the paper tube 2, a used paper tube or a paper tube (recycled paper tube) regenerated from waste paper is used, and its effective use is intended. The shape of the paper tube 2 is generally a circular paper tube as shown in each figure, but may be a square paper tube. A paper tube having a certain thickness is preferable in order to secure a contact area with the plate member 3 to have a required bonding strength and to make use of the role as a strength member of the paper tube 2 in the core material 1. Since the fiber direction of the paper tube 2 is orthogonal to the surface direction of the plate material 3, the adhesive penetrates somewhat from the contact surface to the inside due to capillary action, and the plate material 3 and the paper tube 2 can be firmly bonded. The predetermined width L for cutting the substrate 5 may be a constant width or may be a different width if necessary.
[0008]
When two plate materials 3 and 3 are used as the plate material, the core material 1 has a ladder-like form in which the paper tube 2 is interposed between the column materials 3a and 3a on both sides as shown in FIG. Become. The shape of the paper tube 2 interposed between the column members 3a and 3a varies depending on the arrangement of the paper tubes 2 arranged between the plate materials 3 and 3 in the base material 5 and the cutting position of the base material 5, but as a strength member Since the plate material 3 and the paper tube 2 are firmly bonded as described above, the core material 1 can have a required strength. Since the space between the paper tube 2 and the paper tube 2 is a space, a lightweight core material 1 is obtained. Further, since the paper tube 2 is homogeneous, the core material 1 is hardly twisted.
[0009]
The dimensions of each member in the base material 5 and the core material 1 shown in FIGS. 1 to 3 are such that the thickness of the plate material 3 is 15 mm, the inner diameter of the paper tube 2 is 80 mm, the outer diameter is 120 mm, the thickness is 20 mm, and the paper tube 2 The axial length (A) of 40 mm, the cutting width L of the base material 5 was 15 mm, and the thickness H of the base material 5 was 70 mm. Of course, these dimensions are merely examples, and may be appropriately dimensioned as desired.
[0010]
Three or more plate members 3 can also be used as the plate member 3 constituting the base material 5. For example, four plate members 3 are used, and a large number of paper tubes 2 are arranged in parallel between the plate members 3 and 3. FIG. 4 shows a side view corresponding to FIG. 3 (a) of a core material 1 obtained by cutting a base material 5 in which 3 and each paper tube 2 are integrated in a thickness H direction at a predetermined width L interval. FIG. 4 shows the case where the axial lengths A ₁ , A ₂ , A _{3 of} the paper tubes 2 arranged between the plate members 3, ₃ are the same, but A ₁ , A ₂ , A ₃ are different. Also good. A core material 1 formed from a base material 5 in which a large number of plate materials 3 are used and a paper tube 2 is disposed between the respective plate materials 3 and 3 is a planar core material 1.
[0011]
A core material 7 according to another aspect of the present invention is a frame-shaped core material 7 in which the core material 1 is a primary core material 1a, and the primary core material 1a is assembled and integrated into a frame shape having a desired size. It is. For the integration, the contact portion 8 of each primary core material 1a may be bonded by an adhesive or the like. Here, as shown in FIG. 5, if the primary core material 1 a is assembled and integrated into a frame shape with the paper tube 2 facing sideways, without depending on the thickness H of the base material 5, A frame-shaped core material 7 having a thickness corresponding to the cutting width L of the substrate 5 can be obtained. In this case, the direction of the paper tube 2 in the frame-shaped core material 7 is the surface direction of the frame-shaped core material 7. Each primary core material 1a may be assembled and integrated into a frame shape with its paper tube 2 oriented vertically (with each primary core material 1a in FIG. 5 raised 90 ° with respect to the paper surface). Not shown). In this case, the direction of the paper tube 2 in the frame-shaped core material 7 is the thickness direction of the frame-shaped core material 7.
[0012]
A core material 9 according to still another aspect of the present invention is a planar core material 9 in which the core material 1 is used as a primary core material 1a, and the primary core material 1a is laid in a planar shape having a desired dimension. It is. In order to integrate, the contact part 8 of each primary core material 1a should just be adhere | attached with an adhesive agent like the above. Here, as shown in FIG. 6, if the primary core material 1 a is integrated by laying in a sheet shape with the paper tube 2 facing sideways, without depending on the thickness H of the base material 5, A planar core 9 having a thickness corresponding to the cutting width L of the substrate 5 can be obtained. In this case, the orientation of the paper tube 2 in the planar core 9 is the surface direction of the planar core 9.
[0013]
In FIG. 2, the paper tubes 2 arranged between the plate members 3 and 3 are shown in a state where they are in contact with each other in the left and right direction and with a predetermined distance D in the vertical direction. For example, as shown in FIG. 7, the paper tubes 2 may be arranged in contact with each other. For example, the paper tubes 2 may be arranged apart from each other as shown in FIG. In either case, the substrate 5 is cut at a predetermined width L so that the paper tube 2 is interposed between the plate members 3 and 3. Each figure shows the case where the paper tube 2 having the same diameter and the same thickness is used. However, if the length in the axial direction is the same, the paper tube 2 having a different diameter and thickness may be used. .
[0014]
The above-described core materials 1, 7, and 9 in the present invention are suitable as a core material for joinery such as fences and flush doors, panel materials such as floors and walls, and other various buildings.
[0015]
【The invention's effect】
As described above, according to the core material of the present invention, it is possible to obtain a core material in which the paper tube and the plate material are firmly bonded to each other, which is lightweight, has a required strength, and is less likely to be twisted.
Further, if the above-described core material is used as a primary core material, and the primary core material is assembled in a frame shape with the paper tube facing sideways or laid in a plane shape, the thickness depends on the thickness of the base material. Thus, a frame-shaped core material or a planar core material having a thickness corresponding to the cut width of the base material can be obtained.
[Brief description of the drawings]
FIG. 1 is a partially broken perspective view of a substrate in the present invention.
FIG. 2 is a partially broken plan view of FIG.
FIG. 3 is an explanatory diagram of a core material.
4 is a side view corresponding to FIG. 3 (a) in the case of using a base material in which a paper tube is disposed between four plate members and integrated. FIG.
FIG. 5 is a plan view of a frame-shaped core material obtained by assembling and integrating a primary core material into a frame shape with its paper tube facing sideways.
FIG. 6 is a plan view of a planar core material in which a primary core material is integrated by laying in a planar shape with its paper tube facing sideways.
FIG. 7 is a partially broken plan view corresponding to FIG. 2 when the paper tubes are arranged in contact with each other.
FIG. 8 is a partially broken plan view corresponding to FIG. 2 when the paper tubes are arranged apart from each other.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Core material 1a Primary core material 2 Paper tube 3 Plate material 3a Column material 4 Contact part 5 Base material 6 Cutting line 7 Frame-shaped core material 8 Contact part 9 Planar core material A Axial length D of paper tube D Paper Distance between tube and paper tube H Base material thickness L Specified width

Claims

A large number of paper tubes cut to the same length are arranged in parallel between the plate materials, and a base material to which the contact portion between the plate material and the paper tube is bonded is provided, and the base material is cut in the thickness direction at predetermined width intervals. A core material, wherein the core material is a primary core material, and the primary core material is assembled and integrated into a frame shape .

A large number of paper tubes cut to the same length are arranged in parallel between the plate materials, and a base material to which the contact portion between the plate material and the paper tube is bonded is provided, and the base material is cut in the thickness direction at predetermined width intervals. A core material, wherein the core material is a primary core material, and the primary core material is assembled and integrated in a frame shape with the paper tube facing sideways.

A large number of paper tubes cut to the same length are arranged in parallel between the plate materials, and a base material to which the contact portion between the plate material and the paper tube is bonded is provided, and the base material is cut in the thickness direction at predetermined width intervals. A core material characterized in that the core material is a primary core material, and the primary core material is integrated by laying in a sheet shape with the paper tube facing sideways.