JP2001328153A - Method and apparatus for producing three-dimensional netted structure - Google Patents

Method and apparatus for producing three-dimensional netted structure

Info

Publication number
JP2001328153A
JP2001328153A JP2000281329A JP2000281329A JP2001328153A JP 2001328153 A JP2001328153 A JP 2001328153A JP 2000281329 A JP2000281329 A JP 2000281329A JP 2000281329 A JP2000281329 A JP 2000281329A JP 2001328153 A JP2001328153 A JP 2001328153A
Authority
JP
Japan
Prior art keywords
endless
die
raw material
line
conveyors
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP2000281329A
Other languages
Japanese (ja)
Other versions
JP2001328153A5 (en
JP4350286B2 (en
Inventor
Nobuyuki Takaoka
伸行 高岡
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SHIIENJI KK
C Eng Co Ltd
Original Assignee
SHIIENJI KK
C Eng Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=26587622&utm_source=***_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=JP2001328153(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by SHIIENJI KK, C Eng Co Ltd filed Critical SHIIENJI KK
Priority to JP2000281329A priority Critical patent/JP4350286B2/en
Priority to EP01912385A priority patent/EP1270787B1/en
Priority to AU41148/01A priority patent/AU4114801A/en
Priority to AT01912385T priority patent/ATE470741T1/en
Priority to PCT/JP2001/002046 priority patent/WO2001068967A1/en
Priority to DE60142331T priority patent/DE60142331D1/en
Priority to ES01912385T priority patent/ES2346180T3/en
Priority to US10/221,568 priority patent/US7625629B2/en
Publication of JP2001328153A publication Critical patent/JP2001328153A/en
Publication of JP2001328153A5 publication Critical patent/JP2001328153A5/ja
Priority to US12/494,421 priority patent/US7993734B2/en
Priority to US12/497,567 priority patent/US8563121B2/en
Application granted granted Critical
Publication of JP4350286B2 publication Critical patent/JP4350286B2/en
Priority to US13/228,008 priority patent/US8226882B2/en
Priority to US13/344,653 priority patent/US8757996B2/en
Priority to US13/429,517 priority patent/US8277210B2/en
Priority to US13/570,880 priority patent/US8563123B2/en
Priority to US13/600,304 priority patent/US8568635B2/en
Priority to US13/600,279 priority patent/US8828293B2/en
Priority to US14/048,062 priority patent/US9169585B2/en
Priority to US14/050,417 priority patent/US9174404B2/en
Priority to US14/050,416 priority patent/US9194066B2/en
Priority to US14/849,635 priority patent/US10328618B2/en
Priority to US14/852,646 priority patent/US9561612B2/en
Priority to US14/884,806 priority patent/US10266977B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/34—Feeding the material to the mould or the compression means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/34—Feeding the material to the mould or the compression means
    • B29C2043/3405—Feeding the material to the mould or the compression means using carrying means
    • B29C2043/3416—Feeding the material to the mould or the compression means using carrying means conveyor belts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/34—Feeding the material to the mould or the compression means
    • B29C2043/3433—Feeding the material to the mould or the compression means using dispensing heads, e.g. extruders, placed over or apart from the moulds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
    • B29K2105/08—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts of continuous length, e.g. cords, rovings, mats, fabrics, strands or yarns
    • B29K2105/0809—Fabrics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/26—Scrap or recycled material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
    • B29L2031/3005—Body finishings
    • B29L2031/3017—Floor coverings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
    • B29L2031/3005—Body finishings
    • B29L2031/3041—Trim panels

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Nonwoven Fabrics (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a method for producing a three-dimensional net structure which eliminates finishing in a post process, improves the degree of arrangement, can cope with a special shape, and improves durability and an apparatus for the method. SOLUTION: In the plate-shaped three-dimensional net structure 1, a thermoplastic resin is used as a raw material or as a main raw material, and stripes are partially heat-adhered spirally and disorderly to an entanglement part. The density of the surface side of one of at least three or four surfaces of the periphery of the structure is preferably lower than that of a part extruding the surface side, the flakes or chips of a PET bottle are used as the raw material or the main raw material of the thermoplastic resin, the PET bottle is crushed directly into flakes, it conforms to an era of recycling promotion and can demonstrate power for reducing a waste treatment cost, and as the application of the structure 1, chiefly, an impact absorbing material, a cushioning material, a sound absorbing building material, etc., are named.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【発明の属する技術分野】本発明は、クッション材等に
使用する立体網状構造体の製造方法及び製造装置に関す
るものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for manufacturing a three-dimensional net-like structure used for a cushion material or the like.

【０００２】[0002]

【従来の技術】従来、空隙を有する立体網状構造体の製
造方法としては特公昭５０−３９１８５号記載の方法あ
るいはポリエステル繊維を接着剤で接着した樹脂綿、例
えば接着剤にゴム系を用いたものとして特開昭６０−１
１３５２号等が公知である。また、一方、無端ベルトで
樹脂糸を巻き込むことで空隙を有する立体網目状構造体
を製造する方法或いは製造装置があり、特開平１１−２
４１２６４号等に示す発明が挙げられる。2. Description of the Related Art Conventionally, as a method for producing a three-dimensional network structure having voids, a method described in Japanese Patent Publication No. 50-39185 or resin cotton obtained by bonding polyester fibers with an adhesive, for example, a method using a rubber-based adhesive as the adhesive is used. JP-A-60-1
No. 1352 is known. On the other hand, there is a method or apparatus for manufacturing a three-dimensional network-like structure having voids by winding a resin thread with an endless belt.
No. 41264 and the like.

【０００３】[0003]

【発明が解決しようとする課題】しかしながら、こうし
た立体網状構造体製品への要求は多様化しており、製造
工程の後工程で要求された形状に切断又は成形をして異
形網状体にいちいち仕上げをする必要があり、仕上げが
非常に煩雑化する。However, the demands for such a three-dimensional network structure product are diversified, and each of the three-dimensional network structures is cut or formed into a shape required in a post-process of the manufacturing process to finish the deformed network. Must be performed, and the finishing becomes very complicated.

【０００４】また、従来の方法で製造された立体網状体
構造体は、密度が低く、束の両面部がベルトコンベアに
接するため、実質的に表面がフラット化されるが束の左
・右端面はランダムな螺旋形状であって不整列となる。Further, the three-dimensional network structure manufactured by the conventional method has a low density and the both sides of the bundle are in contact with the belt conveyor, so that the surface is substantially flattened. Are random spiral shapes and are misaligned.

【０００５】また一方、無端ベルトで巻き込んでいる
が、無端ベルトが熱等によって損傷しやすく耐久性に問
題が生じるおそれがある。On the other hand, the endless belt is wound around, but the endless belt is easily damaged by heat or the like, and there is a possibility that a problem may occur in durability.

【０００６】そこで、本発明は、後工程での仕上げを不
要とし、整列度を高め、異形形状への対応を可能とし、
耐久性を向上させた立体網状構造体の製造方法及び製造
装置を提供することを目的とする。Therefore, the present invention eliminates the need for finishing in a post-process, increases the degree of alignment, and makes it possible to deal with irregular shapes.
An object of the present invention is to provide a method and an apparatus for manufacturing a three-dimensional network structure with improved durability.

【０００７】[0007]

【課題を解決するための手段】上記諸課題に鑑み、請求
項１記載の発明は、熱可塑性樹脂を原料又は主原料とす
る溶融した線条を複数の孔を有するダイスから下方へ押
し出し、一部水没した、無端部材を備えた少なくとも１
個の無端コンベアの間に自然降下させ、該降下速度より
前記線条を遅く引き込むことにより立体網目状構造体を
製造する際、押出された線条の集合体の幅より前記無端
コンベアの間隔が狭く設定され、前記無端部材が水没す
る前後に前記線条の集合体の外周の少なくとも三面又は
四面が前記無端部材に接触することを特徴とした立体網
状構造体の製造方法である。これにより、後工程での仕
上げを不要とし、整列度を高めることができる。SUMMARY OF THE INVENTION In view of the above-mentioned problems, the invention according to claim 1 is to extrude a molten filament made of a thermoplastic resin as a raw material or a main raw material downward from a die having a plurality of holes, and Submerged at least one with endless member
When the three-dimensional mesh-like structure is manufactured by lowering naturally between the endless conveyors and drawing the filaments slower than the descending speed, the interval between the endless conveyors is determined by the width of the aggregate of the extruded filaments. A method of manufacturing a three-dimensional net-like structure, characterized in that at least three or four surfaces of the outer periphery of the aggregate of the filaments contact the endless member before and after the endless member is submerged in water. This eliminates the need for finishing in a later step, and can increase the degree of alignment.

【０００８】請求項２記載の発明は、前記立体網目状構
造体の外周の三面又は四面のいずれかの表面側の密度
が、前記表面側を除く部分の密度より相対的に低いこと
を特徴とする請求項１記載の立体網状構造体の製造方法
である。これにより請求項１の課題が一層好適に解決で
きる。[0008] The invention according to claim 2 is characterized in that the density on one of the three or four surfaces on the outer periphery of the three-dimensional network structure is relatively lower than the density on a portion other than the surface side. A method for producing a three-dimensional network structure according to claim 1. Thereby, the subject of claim 1 can be more suitably solved.

【０００９】請求項３記載の発明は、前記立体網目状構
造体の外周の三面又は四面のいずれかの表面側及び中間
部の密度が、前記表面側を除く部分の密度より相対的に
低いことを特徴とする請求項２記載の立体網状構造体の
製造方法である。これにより請求項１の課題が一層好適
に解決できる。According to a third aspect of the present invention, the density of the surface portion and the intermediate portion of any of the three or four surfaces on the outer periphery of the three-dimensional network structure is relatively lower than the density of the portion excluding the surface side. The method for producing a three-dimensional network structure according to claim 2, characterized in that: Thereby, the subject of claim 1 can be more suitably solved.

【００１０】請求項４記載の発明は、複数の孔を有する
口金を先端部に有するダイスを備え、熱可塑性樹脂を原
料又は主原料とする溶融した線条を前記口金から下方へ
押し出す押し出し成形機と、水槽と、該水槽に一部水没
した、無端部材を備えた、少なくとも２個の無端コンベ
アと、を備え、前記線条を前記無端コンベアの間に降下
させ、該降下速度より前記線条を遅く引き込むように前
記無端コンベアの速度を設定し、前記押し出された線条
の集合体の幅より前記無端コンベアの間隔が狭く設定さ
れ、前記無端部材が水没する前後に前記線条の集合体の
外周の少なくとも三面又は四面が前記無端部材に接触す
ることを特徴とした立体網状構造体製造装置である。こ
れにより請求項１と同様の課題を解決できる。According to a fourth aspect of the present invention, there is provided an extrusion molding machine including a die having a die having a plurality of holes at a tip end thereof, and extruding a molten wire made of a thermoplastic resin as a raw material or a main raw material downward from the die. , A water tank, and at least two endless conveyors provided with an endless member partially submerged in the water tank, wherein the line is lowered between the endless conveyors, and the line is determined from the descent speed. Set the speed of the endless conveyor so as to pull in slowly, the interval of the endless conveyor is set to be narrower than the width of the set of extruded filaments, the aggregate of the filaments before and after the endless member is submerged A three-dimensional net-like structure manufacturing apparatus characterized in that at least three or four sides of the outer periphery of the three-dimensional net-like structure contact the endless member. This can solve the same problem as the first aspect.

【００１１】請求項５記載の発明は、複数の孔を有する
口金を先端部に有するダイスを備え、熱可塑性樹脂を原
料又は主原料とする溶融した線条を前記口金から下方へ
押し出す押し出し成形機と、水槽と、該水槽に一部水没
した、無端部材を備えた、少なくとも２個の無端コンベ
アと、を備え、前記線条を前記無端コンベアの間に降下
させ、該降下速度より前記線条を遅く引き込むように前
記無端コンベアの速度を設定し、前記押し出された線条
の集合体の幅より前記無端コンベアの間隔が狭く設定さ
れ、前記無端部材が水没する前後に前記線条の集合体の
外周の少なくとも二面が前記無端部材に接触し、前記無
端コンベアのベルト断面が異形断面とされたことを特徴
とした立体網状構造体製造装置である。これにより異形
形状への対応を可能とすることができる。According to a fifth aspect of the present invention, there is provided an extrusion molding machine comprising a die having a die having a plurality of holes at a tip end thereof, and extruding a molten wire made of a thermoplastic resin or a main raw material downward from the die. , A water tank, and at least two endless conveyors provided with an endless member partially submerged in the water tank, wherein the line is lowered between the endless conveyors, and the line is determined from the descent speed. Set the speed of the endless conveyor so as to pull in slowly, the interval of the endless conveyor is set to be narrower than the width of the set of extruded filaments, the aggregate of the filaments before and after the endless member is submerged A three-dimensional net-like structure manufacturing apparatus, characterized in that at least two outer peripheral surfaces of the endless conveyor are in contact with the endless member, and a belt cross section of the endless conveyor has an irregular cross section. This makes it possible to deal with irregular shapes.

【００１２】請求項６記載の発明は、複数の孔を有する
口金を先端部に有するダイスを備え、熱可塑性樹脂を原
料又は主原料とする溶融した線条を前記口金から下方へ
押し出す押し出し成形機と、水槽と、該水槽に一部水没
した、無端部材を備えた、少なくとも２個の無端コンベ
アと、を備え、前記線条を前記無端コンベアの間に降下
させ、該降下速度より前記線条を遅く引き込むように前
記無端コンベアの速度を設定し、前記押し出された線条
の集合体の幅より前記無端コンベアの間隔が狭く設定さ
れ、前記無端部材が水没する前後に前記線条の集合体の
外周の少なくとも二面が前記無端部材に接触し、前記無
端コンベアの複数条のチェーンにベルト部材として板状
の多数の金属材を直交して周設したことを特徴とした立
体網状構造体製造装置である。これにより無端コンベア
の耐久性を向上させることができる。According to a sixth aspect of the present invention, there is provided an extrusion molding machine including a die having a die having a plurality of holes at a tip end thereof, and extruding a molten wire made of a thermoplastic resin as a raw material or a main raw material downward from the die. , A water tank, and at least two endless conveyors provided with an endless member partially submerged in the water tank, wherein the line is lowered between the endless conveyors, and the line is determined from the descent speed. Set the speed of the endless conveyor so as to pull in slowly, the interval of the endless conveyor is set to be narrower than the width of the set of extruded filaments, the aggregate of the filaments before and after the endless member is submerged A three-dimensional net-like structure manufacturing method, wherein at least two outer peripheral surfaces of the endless member are in contact with the endless member, and a plurality of plate-shaped metal members are orthogonally provided around the plurality of chains of the endless conveyor as belt members. It is the location. Thereby, the durability of the endless conveyor can be improved.

【００１３】請求項７記載の発明は、複数の孔を有する
口金を先端部に有するダイスを備え、熱可塑性樹脂を原
料又は主原料とする溶融した線条を前記口金から下方へ
押し出す押し出し成形機と、水槽と、該水槽に一部水没
した、無端部材を備えた、少なくとも２個の無端コンベ
アと、を備え、前記線条を前記無端コンベアの間に降下
させ、該降下速度より前記線条を遅く引き込むように前
記無端コンベアの速度を設定し、前記押し出された線条
の集合体の幅より前記無端コンベアの間隔が狭く設定さ
れ、前記無端部材が水没する前後に前記線条の集合体の
中空部が形成されるように前記口金に閉塞部を形成した
ことを特徴とした立体網状構造体製造装置である。これ
により異形断面の立体網状構造体が実現し、中空部に再
生部材等を挿入することが多様な用途に適用できるよう
になる。According to a seventh aspect of the present invention, there is provided an extrusion molding machine comprising a die having a plurality of holes at a tip end thereof, and extruding a molten wire made of a thermoplastic resin as a raw material or a main raw material downward from the die. , A water tank, and at least two endless conveyors provided with an endless member partially submerged in the water tank, wherein the line is lowered between the endless conveyors, and the line is determined from the descent speed. Set the speed of the endless conveyor so as to pull in slowly, the interval of the endless conveyor is set to be narrower than the width of the set of extruded filaments, the aggregate of the filaments before and after the endless member is submerged An apparatus for manufacturing a three-dimensional net-like structure, wherein a closed portion is formed in the base so that a hollow portion is formed. As a result, a three-dimensional net-like structure having an irregular cross section is realized, and inserting a reproduction member or the like into the hollow portion can be applied to various uses.

【００１４】請求項８記載の発明は、複数の孔を有する
口金を先端部に有するダイスを備え、熱可塑性樹脂を原
料又は主原料とする溶融した線条を前記口金から下方へ
押し出す押し出し成形機と、水槽と、該水槽に一部水没
した、無端部材を備えた、少なくとも２個の無端コンベ
アと、を備え、前記線条を前記無端コンベアの間に降下
させ、該降下速度より前記線条を遅く引き込むように前
記無端コンベアの速度を設定し、前記押し出された線条
の集合体の幅より前記無端コンベアの間隔が狭く設定さ
れ、前記無端部材が水没する前後に前記線条の集合体の
所定方向に粗密ができるよう、前記口金に孔の密度の高
い領域及び低い領域を形成したことを特徴とした立体網
状構造体製造装置である。これにより異形断面の立体網
状構造体が実現する。所定方向とは厚さ方向、幅方向等
である。孔の密度の高い場合には、孔を多数設けるほ
か、密度を１００％とする場合、例えば、口金にスリッ
トを設けることも含まれる。According to the present invention, there is provided an extrusion molding machine comprising a die having a die having a plurality of holes at a tip end thereof, and extruding a molten wire made of a thermoplastic resin as a raw material or a main raw material downward from the die. , A water tank, and at least two endless conveyors provided with an endless member partially submerged in the water tank, wherein the line is lowered between the endless conveyors, and the line is determined from the descent speed. Set the speed of the endless conveyor so as to pull in slowly, the interval of the endless conveyor is set to be narrower than the width of the set of extruded filaments, the aggregate of the filaments before and after the endless member is submerged A three-dimensional net-like structure manufacturing apparatus, characterized in that a region having a high density of holes and a region having a low density of holes are formed in the die so that the density can be adjusted in a predetermined direction. As a result, a three-dimensional network structure having an irregular cross section is realized. The predetermined direction is a thickness direction, a width direction, or the like. When the density of the holes is high, a large number of holes are provided, and when the density is 100%, for example, slits are provided in a base.

【００１５】[0015]

【発明の実施の形態】以下第１実施形態の立体網状構造
体１は、図１及び図２（ａ）の通り、再生熱可塑性樹脂
を原料又は主原料とし、複数本の線条が螺旋状に無秩序
に絡まり合い部分的に熱接着した板状の三次元網目状構
造体であることを特徴とした立体網状構造体である。前
記三次元網目状構造体の三面の表面側の密度が、前記表
面側を除く部分の密度より相対的に低いことが好まし
い。即ち、第１実施形態の立体網状構造体１（図２
（ａ）参照）は、三面成形であり、対向する他の１面か
ら内部に向かって所定間隔の領域は密度が高く成形され
たものであり、中央部内部の領域の密度はそれよりも低
く設定され他の一面が不揃いと成っている。このため、
後工程で加工することがない利点が生じる。つまり、幅
の広い一対の面及び一側面は後述の無端コンベア等によ
って強制的に成形され、端縁が他の面よりもきれいに揃
えられている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIGS. 1 and 2 (a), a three-dimensional network structure 1 according to a first embodiment uses a recycled thermoplastic resin as a raw material or a main raw material, and has a plurality of filaments formed in a spiral shape. A three-dimensional net-like structure characterized in that it is a plate-like three-dimensional net-like structure that is entangled randomly and partially heat-bonded. It is preferable that the density of the three surface sides of the three-dimensional network structure is relatively lower than the density of a portion other than the surface side. That is, the three-dimensional net-like structure 1 of the first embodiment (FIG. 2)
(Refer to (a)) is a three-sided molding, in which a region at a predetermined interval from the other opposing surface toward the inside is formed with a high density, and a region inside the central portion has a lower density. It is set and the other side is irregular. For this reason,
There is an advantage that no processing is performed in a later step. In other words, a pair of wide surfaces and one side surface are forcibly formed by an endless conveyor or the like, which will be described later, and the edges are aligned more clearly than the other surfaces.

【００１６】ここでは再生熱可塑性樹脂の原料又は主原
料としてＰＥＴボトルのフレーク状又はチップ状を使用
する。ＰＥＴボトルをそのまま粉砕しそれを溶融させて
フレーク形状にしたものである。リサイクル促進の時代
にも適合している。これが再生品ではなく、純正品であ
ると、乾燥結晶化、或いはごみ除去等、コスト的に１ｍ
2あたりの製造費が倍増する。廃棄処理コスト削減に威
力を発揮できる。しかしながら、再生以外の熱可塑性樹
脂等においても適用可能である。例えば、熱可塑性樹脂
としてポリエチレン、ポリプロピレンなどのポリオレフ
ィン、ポリエチレンテレフタレートなどのポリエステ
ル、ナイロン６６などのポリアミド、ポリ塩化ビニル、
ポリスチレン、上記樹脂をベースとし共重合したコポリ
マーやエラストマー、上記樹脂をブレンドしたもの等が
挙げられる。更に、立体網状構造体１の用途としては、
主として、クッション材、衝撃吸収材、床材の下又は内
部に適用される例が挙げられるが、二重壁体の内部に適
用することもできる。この第１実施形態は概ね内部が均
一な密度に成形されたものである。見掛密度は０．０２
〜０．９ｇ／cｍ3（空隙率３６〜９８．４％に相当す
る）が好ましく、０．０５〜０．１５ｇ／cｍ3が特に好
ましい。立体網状構造体１は例えば幅０．１ｍ〜２ｍ、
厚さは５ｍｍ〜２００ｍｍが好ましく、長さ方向におい
ては無端状であり、適宜の長さ（例えば９００ｍｍ）に
切断するが、それらのサイズ例に限定されるわけではな
い。Here, flakes or chips of PET bottles are used as the raw material or main raw material of the recycled thermoplastic resin. PET bottles are crushed as they are and melted to form flakes. Suitable for the age of promoting recycling. If this is not a recycled product but a genuine product, it costs 1 m in terms of cost such as dry crystallization or dust removal.
The production cost per 2 doubles. Effective in reducing waste disposal costs. However, the present invention is also applicable to thermoplastic resins other than recycled. For example, as a thermoplastic resin, polyethylene, polyolefin such as polypropylene, polyester such as polyethylene terephthalate, polyamide such as nylon 66, polyvinyl chloride,
Examples include polystyrene, copolymers and elastomers copolymerized based on the above resins, and blends of the above resins. Further, as a use of the three-dimensional network structure 1,
Examples mainly include applications under or inside cushioning materials, shock absorbing materials, and flooring materials, but they can also be applied inside double wall bodies. In the first embodiment, the inside is formed with a substantially uniform density. Apparent density is 0.02
0.9 g / cm 3 (corresponding to porosity of 36 to 98.4%) are preferred, 0.05~0.15g / cm 3 is particularly preferred. The three-dimensional network structure 1 has, for example, a width of 0.1 m to 2 m,
The thickness is preferably 5 mm to 200 mm, is endless in the length direction, and is cut to an appropriate length (e.g., 900 mm), but is not limited to these size examples.

【００１７】第２実施形態の立体網状構造体２（図２
（ｂ）参照）は、四面成形であり全ての面が揃えられて
おり、第１実施形態の立体網状構造体１の左右側面から
内部に向かって所定間隔の領域は密度が高く成形された
ものであり、中央部内部の領域の密度はそれよりも低く
設定されている。即ち、上面及び底面を除き、全ての面
から内部に向かって所定間隔の領域は密度が高く成形さ
れたものである。The three-dimensional network structure 2 of the second embodiment (FIG. 2)
(Refer to (b)) is a four-sided molding, in which all surfaces are aligned, and regions at predetermined intervals from the left and right side surfaces to the inside of the three-dimensional net-like structure 1 of the first embodiment are formed with high density. And the density of the region inside the central portion is set lower than that. That is, regions except for the upper surface and the bottom surface and at predetermined intervals from all surfaces toward the inside are formed with high density.

【００１８】第３実施形態の立体網状構造体３は、その
表面を異形面とするものである。例えば、凸面を備えた
もの３Ａ（図４（ａ）参照）、凹面を備えたもの３Ｂ
（図４（ｂ）参照）、複数の連続的に形成された凹凸面
を備えたもの３Ｃ（図４（ｃ）参照）、複数の鋸歯面を
備えたもの３Ｄ（図４（ｄ）参照）、複数の波面を備え
たもの３Ｅ（図４（ｅ）参照）、隅が曲面（アール）形
状のもの３Ｆ（図４（ｆ）参照）、角が所定角度（ここ
では４５度）にカットされたもの３Ｇ（図４（ｇ）参
照）、或いはそれらの適宜の組合せ等が挙げられ、建築
施工現場で様々な形態のものが製品として要求され、こ
れに対応することが出来る。また、複雑な形状とするこ
とで、多様な用途が生じると考えられる。特に、前述の
第１実施形態及び第２実施形態のように立体網状構造体
の三面又は四面を強制的に成形することで、多様な製品
要求を満足させることができる。さらに一般的には製品
の要求される異形形状に対しては、後工程で要求形状の
切断又は成形をして異形網状体とするのであるが、本実
施形態によれば、製品の要求する形状、寸法を後工程で
仕上することなく即座に製品の提供が出来、後工程を不
要にできる。The three-dimensional network structure 3 of the third embodiment has an irregular surface. For example, 3A with a convex surface (see FIG. 4A), 3B with a concave surface
(See FIG. 4B), 3C with a plurality of continuously formed uneven surfaces (see FIG. 4C), 3D with a plurality of sawtooth surfaces (see FIG. 4D) 3E (see FIG. 4 (e)) having a plurality of wavefronts, 3F (see FIG. 4 (f)) having a curved (round) corner, and a corner cut at a predetermined angle (here 45 degrees). 3G (see FIG. 4 (g)), or an appropriate combination thereof, and various types of products are required as products at the construction site, and this can be met. In addition, it is considered that a variety of uses are caused by the complicated shape. In particular, by forcibly molding three or four sides of the three-dimensional network structure as in the first and second embodiments described above, various product requirements can be satisfied. More generally, for a deformed shape required for a product, the required shape is cut or molded in a later step to form a deformed net. According to the present embodiment, the shape required for the product is The product can be provided immediately without finishing the dimensions in the post-process, and the post-process can be eliminated.

【００１９】第４実施形態の立体網状構造体４（図２
（ｃ）参照）は、単数又は複数（ここでは２個）の中空
部４Ａ，４Ｂを備えたものであり、コストの更なる削減
等を目的とするものである。The three-dimensional network structure 4 of the fourth embodiment (FIG. 2)
(C) has one or more (here, two) hollow portions 4A and 4B, and aims at further cost reduction and the like.

【００２０】第５実施形態の立体網状構造体５（図２
（ｄ）参照）は、第４実施形態の立体網状構造体４の中
空部４Ａ，４Ｂと同様の中空部５Ａ，５Ｂに板状の再生
ベニア、板状の再生シュレッダーダスト等の再生部材５
Ｃ，５Ｄを入れたものであり、再生板材により吸音性、
断熱性、クッション性等の向上を目的としたものであ
る。The three-dimensional network structure 5 of the fifth embodiment (FIG. 2)
(Refer to (d)). In the hollow portions 5A and 5B similar to the hollow portions 4A and 4B of the three-dimensional net-like structure 4 of the fourth embodiment, a recycled member 5 such as a plate-shaped recycled veneer or a plate-shaped recycled shredder dust is provided.
C and 5D are inserted, and the sound absorption and
This is for the purpose of improving heat insulating properties, cushioning properties, and the like.

【００２１】第６実施形態の立体網状構造体６（図２
（ｅ）参照）は、第１実施形態の立体網状構造体１の内
部において、厚さ方向に密度を高めて、部分的に、単数
又は複数（ここでは３本）の梁状の高密度領域６Ａ，６
Ｂ，６Ｃを所定間隔で形成することで、吸音性、断熱
性、クッション性、耐衝撃性を高めたものである。The three-dimensional network structure 6 of the sixth embodiment (FIG. 2)
(See (e)), inside the three-dimensional network structure 1 of the first embodiment, the density is increased in the thickness direction, and a single or plural (here, three) beam-shaped high-density regions are partially formed. 6A, 6
By forming B and 6C at predetermined intervals, sound absorption, heat insulation, cushioning, and impact resistance are improved.

【００２２】第７実施形態の立体網状構造体７（図２
（ｆ）参照）は、その内部において、幅方向に密度を高
めて、部分的に、単数又は複数（ここでは１本）の高密
度領域７Ａを形成することで、吸音性、断熱性、クッシ
ョン性、耐衝撃性を高めたものである。The three-dimensional network structure 7 of the seventh embodiment (FIG. 2)
(Refer to (f)) is to increase the density in the width direction and partially form one or a plurality (here, one) of high-density regions 7 </ b> A in the inside thereof, so that sound absorption, heat insulation, and cushioning are achieved. It has improved properties and impact resistance.

【００２３】第８実施形態の立体網状構造体８（図２
（ｇ）参照）は、第７実施形態において、波型の高密度
領域８Ａとし、吸音性、断熱性、クッション性、耐衝撃
性を高めたものである。The three-dimensional network structure 8 of the eighth embodiment (FIG. 2)
(See (g)) in the seventh embodiment is a corrugated high-density region 8A with improved sound absorption, heat insulation, cushioning, and impact resistance.

【００２４】第９実施形態の立体網状構造体９（図３
（ａ）参照）は、第１実施形態の立体網状構造体２の内
部において、幅方向の所定位置にシート９Ａ（空隙がな
い領域）を形成することで、吸音性、断熱性、クッショ
ン性、耐衝撃性を高めたものである。シート９Ａの周囲
に線条（樹脂糸）が絡まりあっている。シート９Ａは図
示の通り横幅一杯に設けても良いし、例えば中央部分等
に部分的に設けても良い。The three-dimensional network structure 9 of the ninth embodiment (FIG. 3)
(See (a)) is to form a sheet 9A (a region without voids) at a predetermined position in the width direction inside the three-dimensional network structure 2 of the first embodiment, so that sound absorption, heat insulation, cushioning, It has improved impact resistance. The filament (resin thread) is entangled around the sheet 9A. The sheet 9A may be provided so as to have a full width as shown, or may be provided partially, for example, in a central portion or the like.

【００２５】上記第９実施形態の立体網状構造体９（図
３（ｂ）参照）のシート９Ａは概ね波型に形成されてお
り、吸音性、断熱性、クッション性、耐衝撃性を高めた
ものである。こうした波型に成形できるのは、後述の通
り、ロールの引き取り速度が樹脂糸の下降速度よりも遅
いからである。シート９Ａの波の間隔、高さ、幅等は製
造条件によって異なり、図示のものに限られるものでは
ない。シート９Ａの波の間隔が狭い場合、互いに接着さ
れることもある。第９実施形態は、図１１（ｅ）のスリ
ット（線状貫通溝）７５ａを使用することで製造でき
る。The sheet 9A of the three-dimensional net-like structure 9 (see FIG. 3B) of the ninth embodiment has a substantially corrugated shape, and has improved sound absorbing properties, heat insulating properties, cushioning properties, and impact resistance. Things. The reason why such a corrugation can be obtained is that the take-up speed of the roll is lower than the descent speed of the resin yarn, as described later. The wave interval, height, width, and the like of the sheet 9A vary depending on the manufacturing conditions, and are not limited to those illustrated. When the interval between the waves of the sheets 9A is narrow, they may be adhered to each other. The ninth embodiment can be manufactured by using the slit (linear through groove) 75a in FIG.

【００２６】その他、図示は略すが、断面形状が三角形
状、Ｙ型形状等の異形断面となるものについても実施可
能である。In addition, although not shown in the drawings, the present invention can also be applied to the case where the cross-sectional shape is an irregular cross-section such as a triangular shape or a Y-shaped shape.

【００２７】（立体網状構造体製造装置）次に、立体網
状構造体製造装置１０を説明する。この立体網状構造体
製造装置１０は、図５の通り、押出成形機１１、無端部
材１２，１３を備えた一対の無端コンベア１４，１５
（図７参照）、無端部材１２，１３を駆動する駆動モー
タ１６、チェーン及び歯車から構成され無端部材１２，
１３の移動速度を変速させる変速機１７、一対の無端コ
ンベア１４，１５を一部水没させる水槽１８、制御装置
１９、その他計器類等から構成されている。(Three-dimensional network structure manufacturing apparatus) Next, the three-dimensional network structure manufacturing apparatus 10 will be described. As shown in FIG. 5, the three-dimensional network structure manufacturing apparatus 10 includes an extruder 11 and a pair of endless conveyors 14 and 15 having endless members 12 and 13.
(See FIG. 7), a drive motor 16 for driving the endless members 12 and 13, a chain and gears,
13, a transmission 17 for shifting the moving speed of the motor 13, a water tank 18 for partially submerging the pair of endless conveyors 14 and 15, a control device 19, and other instruments.

【００２８】無端部材１２，１３は複数の金属製（ここ
ではステンレス等）の板材２１が所定の隙間２２（図８
（ａ）参照）を設けて複数（ここでは各２本）の無端チ
ェーン１２ａ，１３ａ（図７（ａ），（ｂ）参照）にね
じ（図示略）で連結されたものである。これに代えて図
８（ｂ）の通り、隙間２２を無くしたステンレスメッシ
ュ（金網）等のベルト２３でも良い。このメッシュベル
トは、スパイラル（螺旋）とロッド（力骨）を組み合わ
せてできたものであり、この２つの要素の形状、線径、
ピッチにより、様々なタイプができあがる。動きが滑ら
かでベルト表面を水平に保つことに優れ、高温使用に優
れ、補修も簡単である。或いは、図７の点線で示す通
り、ステンレスメッシュのベルト２３を無端部材１２，
１３の外周に張設したものも実施可能であり、隙間２２
による凹凸の形成を防止したい場合に好適である。ま
た、板材２１の断面は長方形であるが、凸形のもの２４
（図８（ｃ）参照）、凹形のもの２５（図８（ｄ）参
照）、鋸歯形のもの２６（図８（ｅ）参照）、連続的に
形成された凹凸形のもの２７（図８（ｆ）参照）等様々
な変更形態が考えられる。As for the endless members 12 and 13, a plurality of metal (here, stainless steel or the like) plate members 21 are provided in predetermined gaps 22 (FIG. 8).
(See FIG. 7A) and connected to a plurality (two in this case) of endless chains 12a and 13a (see FIGS. 7A and 7B) by screws (not shown). Instead, as shown in FIG. 8B, a belt 23 such as a stainless mesh (wire mesh) without the gap 22 may be used. This mesh belt is made by combining a spiral (spiral) and a rod (power bone), and the shape, wire diameter,
Various types are created depending on the pitch. Excellent in smooth movement, keeping the belt surface horizontal, excellent in high temperature use, and easy to repair. Alternatively, as shown by a dotted line in FIG.
13 can also be implemented.
This is suitable when it is desired to prevent the formation of unevenness due to the above. The cross section of the plate material 21 is rectangular, but the convex shape
(See FIG. 8 (c)), concave 25 (see FIG. 8 (d)), sawtooth 26 (see FIG. 8 (e)), continuously formed uneven 27 (see FIG. 8 (e)). 8 (f)).

【００２９】無端コンベア１４は、図７の通り、上下に
配置された、前記無端チェーン１２ａが巻き掛けられた
スプロケット１４ａを有する駆動軸１４ｂと、スプロケ
ット１４ｃを有する従動軸１４ｄを備えている。また、
無端コンベア１５は無端コンベア１４と同期して駆動さ
れ、上下に配置された、前記無端チェーン１３ａが巻き
掛けられたスプロケット１５ａを備えた従動軸１５ｂ
と、スプロケット１５ｃを備えた従動軸１５ｄとを備え
ている。As shown in FIG. 7, the endless conveyor 14 includes a drive shaft 14b having a sprocket 14a around which the endless chain 12a is wound, and a driven shaft 14d having a sprocket 14c. Also,
The endless conveyor 15 is driven in synchronization with the endless conveyor 14, and is driven vertically with a sprocket 15a around which the endless chain 13a is wound.
And a driven shaft 15d having a sprocket 15c.

【００３０】図５の通り、押出成形機１１は、コンテナ
３１、コンテナ３１上部に設けた原料供給口３２、ダイ
ス３３、ダイス３３の下端部に脱着自在に固定可能な口
金３４等から構成されている。押出成形機１１のダイス
内部の温度範囲は１００〜４００℃、押出量は２０〜２
００Kg／時間、等に設定可能である。ダイス３３の圧力
範囲は０．２〜２５ＭＰａ、例えば７５ｍｍスクリュー
の吐出圧である。立体網状構造体の厚さが１００ｍｍを
越えるとキヤポンプ等によりダイス圧力の均一が必要で
ある。したがって、ダイス内全域から均等に線条を吐出
させるためにギヤポンプ等によりダイス内の圧力を上げ
ることが必要となる。このとき立体網状シートの形状を
形成するため、無端コンベア１４，１５の各面は自由に
移動出来る構造とし、ダイス３３の口金３４の形状（孔
Ｈの密度又は径）と無端コンベア１４，１５の搬送速度
により所望の密度、強度をもった製品を製造することが
でき、製品の多様な要求を満足させることができる。As shown in FIG. 5, the extruder 11 comprises a container 31, a raw material supply port 32 provided in the upper part of the container 31, a die 33, a base 34 detachably fixed to the lower end of the die 33, and the like. I have. The temperature inside the die of the extruder 11 is 100 to 400 ° C., and the extrusion amount is 20 to 2
It can be set to, for example, 00 kg / hour. The pressure range of the die 33 is 0.2 to 25 MPa, for example, a discharge pressure of a 75 mm screw. When the thickness of the three-dimensional net-like structure exceeds 100 mm, it is necessary to make the die pressure uniform by a pump or the like. Therefore, it is necessary to increase the pressure in the die by a gear pump or the like in order to uniformly discharge the filaments from the whole area in the die. At this time, in order to form the shape of the three-dimensional net-like sheet, each surface of the endless conveyors 14 and 15 has a structure that can move freely, and the shape (density or diameter of the hole H) of the die 34 of the die 33 and the endless conveyors 14 and 15 A product having a desired density and strength can be manufactured depending on the transport speed, and various requirements of the product can be satisfied.

【００３１】ここで、図９（ａ），（ｂ）に示す通りの
四面成形機である場合の立体網状構造体製造装置５０を
説明する。この立体網状構造体製造装置５０は、図７に
示す二面成形の場合の無端コンベア１４，１５に対応し
た、回転軸５４ａ，５５ａを有する無端コンベア５４，
５５と、これらの無端コンベア５４，５５の長手方向端
部にそれらと回転軸が直交して配置された回転可能な回
転軸５６ａ，５７ａを備えた一対のロール５６，５７が
配置されている。回転軸５４ａにはそれぞれ傘歯車５４
ｂ，５４ｃが設けられ、回転軸５６ａ，５７ａにもそれ
ぞれ傘歯車５６ｂ，５７ｂが設けられ、傘歯車５４ｂ，
５４ｃ及び傘歯車５６ｂ，５７ｂが歯合され、回転軸５
４ａ，５５ａはチェーンＣを介してモータＭによって同
期駆動され、従って、回転軸５６ａ，５７ａも同期駆動
されるようになっている。回転軸５６ａ，５７ａの他端
部は軸受５８ａ，５８ｂで支持されている。Here, a description will be given of a three-dimensional network structure manufacturing apparatus 50 in the case of a four-sided molding machine as shown in FIGS. 9 (a) and 9 (b). The three-dimensional network structure manufacturing apparatus 50 includes an endless conveyor 54 having rotating shafts 54a and 55a corresponding to the endless conveyors 14 and 15 in the case of the two-sided molding shown in FIG.
A pair of rolls 56, 57 having rotatable rotating shafts 56 a, 57 a whose rotating shafts are arranged orthogonal to the endless conveyors 55, 55 are arranged at the longitudinal ends of the endless conveyors 54, 55. Bevel gears 54 are provided on the rotating shafts 54a, respectively.
b, 54c are provided, and bevel gears 56b, 57b are also provided on the rotating shafts 56a, 57a, respectively.
54c and the bevel gears 56b and 57b mesh with each other,
The motors 4a and 55a are synchronously driven by a motor M via a chain C, and therefore, the rotating shafts 56a and 57a are also synchronously driven. The other ends of the rotating shafts 56a, 57a are supported by bearings 58a, 58b.

【００３２】図９（ｃ）の通り、無端コンベア５４，５
５と同様な構造で短尺の一対の無端コンベア５９ａ，５
９ｂを直交して配置したものでも良い。この場合、一
層、成形を精密に行うことができ、寸法精度が向上す
る。As shown in FIG. 9C, the endless conveyors 54, 5
5, a pair of short endless conveyors 59a, 59
9b may be arranged orthogonally. In this case, the molding can be performed more precisely, and the dimensional accuracy is improved.

【００３３】図９（ｄ）の通り、四面成形を用いて製造
ができる。また、図９（ｅ）の通り、これを用いて、三
面成形を行うことも出来る。即ち、立体網状構造体の種
類によってはダイスを２系列設けて、平行して線条を押
出すようにすれば、生産効率が２倍と成る。As shown in FIG. 9D, it can be manufactured using four-sided molding. Further, as shown in FIG. 9E, three-sided molding can be performed using this. That is, depending on the type of the three-dimensional net-like structure, if two dies are provided and the filaments are extruded in parallel, the production efficiency is doubled.

【００３４】図１０の通り、変更形態として、前述の同
期駆動に替えて、駆動源（モータ等）をそれぞれ設け
て、無端コンベア６４，６５と、ロール６６，６７（無
端コンベアとしても良い）とが独立駆動するような構成
も可能である。即ち、三面又は四面成形の場合、回転軸
６４ａ，６５ａを有する無端コンベア６４，６５と、こ
れらの無端コンベア６４，６５の長手方向端部にそれら
と回転軸が直交して配置された回転可能な回転軸６６
ａ，６７ａを備えた一対のロール６６，６７が配置され
ている。回転軸６６ａ，６７ａにもそれぞれモータＭが
設けられ、独立駆動されるようになっている。回転軸６
６ａ，６７ａの他端部は軸受６８ａ，６８ｂで支持され
ている。As shown in FIG. 10, as a modification, drive sources (motors and the like) are provided in place of the above-mentioned synchronous drive, and endless conveyors 64 and 65 and rolls 66 and 67 (which may be endless conveyors). Can be independently driven. That is, in the case of three- or four-sided molding, endless conveyors 64 and 65 having rotating shafts 64a and 65a, and rotatable endless conveyors 64 and 65 having their rotating shafts disposed orthogonally to the longitudinal ends thereof. Rotating shaft 66
A pair of rolls 66 and 67 having a and 67a are arranged. Motors M are also provided on the rotating shafts 66a and 67a, respectively, so that they can be driven independently. Rotary shaft 6
The other ends of 6a and 67a are supported by bearings 68a and 68b.

【００３５】口金３４の穴は直列下降であり、穴があい
てここから糸が下方向に降下して出てくる。等間隔でも
良いし、非等間隔でも良い。穴は千鳥状、直交状等、様
々な配列を取り得る。配列密度を変えたい場合、積極的
に端部領域だけ密度を高くする方法をとることもある。
口金の形態を様々に変形されることで製品の多様な要求
を満足させることができる。例えば、１．０ｍ×１８０
ｍｍの面積に直径０．５ｍｍの約３５００個の孔Ｈがほ
ぼ等間隔で形成された口金７１（口金の孔Ｈの設けた領
域の大きさの範囲は口金７１の面積の９０％を占める）
（図１１（ａ）参照）、周辺部７２ａだけ孔Ｈの密度を
高くした口金７２（図１１（ｂ）参照）、升目状領域と
なるように枠状部７３ａの密度を高めた口金７３（図１
１（ｃ）参照）、多数の孔Ｈの他に短手方向に並行にス
リット（線状貫通孔）７４ａ〜７４ｃを形成した口金７
４（図１１（ｄ）参照）、多数の孔Ｈの他に長手方向の
中央部にスリット（線状貫通孔）７５ａを形成した口金
７５（図１１（ｅ）参照）、多数の孔Ｈの他に長手方向
にスリット（線状貫通孔）７６ａを長手方向の辺に近い
位置に形成した口金７６（図１１（ｆ）参照）等、中空
部作成のため、該当する個所に孔Ｈが設けられていない
領域７７ｃ，７７ｄを形成し、該領域の下部に下方に延
び出す角形の誘導部材（パイプ等）７７ａ，７７ｂを設
けた口金７７（図１１（ｇ），（ｈ）参照）等、多数の
仕様が実施可能である。前記口金に形成された孔Ｈの密
度は、１〜５個／ｃｍ2が好ましい。The hole of the base 34 is descended in series, and a hole is formed from which the yarn descends downward and comes out. The intervals may be equal or non-equidistant. The holes can take various arrangements such as staggered, orthogonal, and the like. When it is desired to change the array density, a method of positively increasing the density only in the end region may be adopted.
By changing the shape of the base in various ways, it is possible to satisfy various requirements of products. For example, 1.0m × 180
A base 71 in which approximately 3500 holes H having a diameter of 0.5 mm are formed at substantially equal intervals in an area of mm (the size range of the region where the holes H of the base is provided occupies 90% of the area of the base 71).
(See FIG. 11A), a base 72 in which the density of the holes H is increased only in the peripheral portion 72a (see FIG. 11B), and a base 73 in which the density of the frame-shaped portion 73a is increased so as to form a grid-shaped region. FIG.
1 (c)), a base 7 having slits (linear through-holes) 74a to 74c formed in parallel with the short direction in addition to the large number of holes H.
4 (see FIG. 11D), a base 75 having a slit (linear through-hole) 75a formed in the center in the longitudinal direction in addition to the large number of holes H (see FIG. 11E). In addition, a hole H is provided at a corresponding location to create a hollow portion, such as a base 76 (see FIG. 11 (f)) in which a slit (linear through hole) 76a is formed in a position near the side in the longitudinal direction. Bases 77 (see FIGS. 11 (g) and 11 (h)) provided with rectangular guide members (pipe etc.) 77a and 77b which form regions 77c and 77d which are not formed and extend downward at the lower part of the regions. Numerous specifications are feasible. The density of the holes H formed in the die is preferably 1 to 5 holes / cm 2 .

【００３６】（立体網状構造体の製造方法）この立体網
状構造体１は次のように製造される。まず再生ＰＥＴボ
トルフレークを加水分解防止のため加熱し乾燥させ、こ
れに適宜仕上がりを良好にする薬剤、又は抗菌剤等を添
加することもある。口金３４からフラットに線条が降下
すると、無端コンベア１４，１５の無端部材１２，１３
の巻き込み作用により螺旋状に巻かれる。巻いたときに
無端部材１２，１３の面に当たったところから、巻き込
んでいく。巻き込まれた部分は密度が大きく、巻き込ま
れない部分は密度が小さい。(Method of Manufacturing Three-dimensional Network Structure) The three-dimensional network structure 1 is manufactured as follows. First, the recycled PET bottle flakes are heated and dried to prevent hydrolysis, and an agent for improving the finish, an antibacterial agent, or the like may be appropriately added thereto. When the filament descends flat from the base 34, the endless members 12, 13 of the endless conveyors 14, 15 are moved.
Is spirally wound by the winding action of. It winds in from the place where it hits the surface of the endless members 12 and 13 at the time of winding. The entrained portion has a high density, and the unengaged portion has a low density.

【００３７】つぎに、図６の通り、溶融した熱可塑性樹
脂を複数のダイス３３より下方へ押出し、一部水没した
１対の無端コンベア１４，１５の間に自然降下させ、上
記の降下速度より遅く引き取ることにより三次元網目状
構造体である立体網状構造体１を製造する際に、押出さ
れた溶融樹脂の集合体の幅より１対の無端コンベア１
４，１５の間隔が狭く、かつ無端コンベア１４，１５が
水没する前後に上記溶融樹脂の集合体の両面あるいは片
面が無端コンベア１４，１５に接触するようにした。Next, as shown in FIG. 6, the molten thermoplastic resin is extruded downward from a plurality of dies 33, and is naturally lowered between a pair of endless conveyors 14 and 15 partially submerged. When a three-dimensional network structure 1 which is a three-dimensional network structure is manufactured by taking the material late, a pair of endless conveyors 1 is set larger than the width of the aggregate of the extruded molten resin.
The gap between the endless conveyors 4 and 15 was narrow, and both or one side of the aggregate of the molten resin was brought into contact with the endless conveyors 14 and 15 before and after the endless conveyors 14 and 15 were submerged.

【００３８】溶融した熱可塑性樹脂の集合体の両面ある
いは片面の表面部分は、無端コンベア１４，１５上に落
下し、溶融した熱可塑性樹脂の集合体の内側へ移動し密
な状態となるため、水中にそのまま落下した中央部分よ
り空隙率が小さくなるわけである。当然ながら空隙率が
低くなった表面部分は、空隙率が高い中央部分より交点
の数が多くなり、引張り強度が著しく強くなる。また、
空隙率が低い表面部分は空隙部の面積が小さくなり、衝
撃吸収層、防音層となるわけである。The surface portions of both sides or one side of the melted thermoplastic resin aggregate fall onto the endless conveyors 14 and 15 and move inside the melted thermoplastic resin aggregate to be in a dense state. The porosity is smaller than that of the central part that falls as it is in water. As a matter of course, the surface portion where the porosity is low has a larger number of intersections than the central portion where the porosity is high, and the tensile strength is significantly increased. Also,
The surface portion having a low porosity has a small area of the void portion, and becomes a shock absorbing layer and a soundproof layer.

【００３９】立体網状構造体１として機能するために
は、全体の空隙率は、使用する現地施工状況にもよる
が、８０％〜９８％の空隙率の範囲が良好であるとの結
果が得られた。つまり、密度が大きいと音がブロックさ
れると考えられる。リサイクル吸音建材、クッション
材、断熱材等として十分な機能を発揮するには、空隙率
は少なくとも８０％以上にすると良いという結果が得ら
れた。つまり、空隙率が８０％より小さいと、衝撃吸収
効果、防音効果、断熱効果、クッション性が期待したほ
ど向上しなかった。この空隙率については、立体網状構
造体１の用途に応じて、８０％以上９８％以下の範囲で
適宜設計すると良い。In order to function as the three-dimensional net-like structure 1, the result that the whole porosity is good in the range of 80% to 98% porosity depends on the local construction conditions used. Was done. That is, it is considered that the sound is blocked when the density is high. In order to exhibit sufficient functions as a recycled sound-absorbing building material, cushioning material, heat insulating material, and the like, it was found that the porosity should be at least 80% or more. That is, when the porosity is less than 80%, the shock absorbing effect, the soundproofing effect, the heat insulating effect, and the cushioning property were not improved as expected. The porosity may be appropriately designed in the range of 80% or more and 98% or less according to the use of the three-dimensional network structure 1.

【００４０】立体網状構造体１の表面部は、空隙率が低
くなっており、表面から、線条径の１倍〜３倍までの距
離の部分、概ね数ｍｍ程度である。本発明の立体網状構
造体１の構造上、その表面部は線条が密になっていて、
線条同士が重なり合っている部分もあり、空隙率が９８
％以下の範囲では、線条が３本程度まで重なり合ってい
る部分が確認できた。また線条径とは立体網状構造体１
を構成している線条の断面形状が円形の場合は、その直
径のことであり、断面形状が角形など円形でない場合
は、断面が円形であると仮定してその断面積から求めた
直径のことである。The porosity of the surface of the three-dimensional net-like structure 1 is low, and the distance from the surface to the diameter of 1 to 3 times the linear diameter is approximately several mm. Due to the structure of the three-dimensional net-like structure 1 of the present invention, the surface portion has a fine line,
There is a part where the filaments overlap each other, and the porosity is 98.
In the range of not more than%, it was confirmed that there was a portion where the filaments overlapped up to about three. In addition, the filament diameter is a three-dimensional net-like structure 1
If the cross-sectional shape of the line forming the circle is circular, it is the diameter.If the cross-sectional shape is not circular, such as a square, the diameter is calculated from the cross-sectional area assuming that the cross-section is circular. That is.

【００４１】ここで使用する熱可塑性樹脂としては、Ｐ
ＥＴボトルを粉砕し、フレークとしたものを原料又は主
原料とする。しかし、主原料にポリプロピレン等のポリ
マー或は複数のポリマーをブレンドしたものなど、通常
の押出成形機で加工のできる樹脂であれば問題ない。The thermoplastic resin used here is P
The ET bottle is crushed and made into flakes as a raw material or a main raw material. However, there is no problem as long as the resin is a resin that can be processed by an ordinary extruder, such as a blend of a polymer such as polypropylene or a plurality of polymers as a main raw material.

【００４２】異形立体網状体を製品形状にする工程をダ
イスの内部圧力を均一化し、引取面を二面、三面又は四
面又は中間部で引き取る構造とした。これにより見掛密
度０．０２〜０．９ｇ／cｍ3を可能とし、溶融した線条
を無秩序な螺旋形状から平板状とし、また、厚さ方面の
前面、後面、左端面、右端面の立体網状構造体表面部を
平面、凸凹の異形形状とすることを特徴とする。三次元
網状構造体を形成するためのダイスの口金形状を丸棒、
異形（パイプ、Ｙ形）等の形状とその複合による組合せ
での多様な三次元網状構造体を可能とする。また、立体
網状構造体を引取機のロール圧縮によって超密構造体の
シート構造体とする。ダイスから再生ＰＥＴ樹脂が均一
して吐出されるためのダイス内圧の均一化と立体網状シ
ート製造をする際に押出された溶融樹脂の集合体の三面
又は四面にコンベアで形状形成する引取コンベアに接触
するようにした。つまり溶融した再生ＰＥＴ樹脂の集合
体を三面又は四面表面部に製品形状に対応した形状にす
る。例えば必要により多角形等のコンベアに樹脂集合体
を引取り製品を形成する。立体網状シートを得る方法の
一つとしては、溶融した樹脂の複数のダイスより下方へ
押し出し、水面、又は一部水没したコンベアの間に自然
降下させることにより、無秩序な螺旋形状を作り出し立
体網状シートとなる。シートの幅１．０ｍ、厚さ１００
ｍｍとした場合、密度が変化することを確かめるため無
端コンベアの速度を変化させることにより密度は変化す
ることを確認した。さらに押出機の吐出量の変化により
密度が変化することを確かめた。In the step of forming the deformed three-dimensional net into a product shape, the internal pressure of the dice is made uniform, and the take-up surface is taken up on two, three or four sides or an intermediate part. This enables an apparent density of 0.02 to 0.9 g / cm 3 , makes the melted filament a flat shape from a disordered spiral shape, and a three-dimensional structure of the front surface, rear surface, left end surface, and right end surface in the thickness direction. It is characterized in that the surface of the net-like structure has a flat, uneven shape. A round bar with a die shape for forming a three-dimensional network
A variety of three-dimensional net-like structures can be obtained by combining shapes such as irregular shapes (pipe, Y-shape) and their combinations. Further, the three-dimensional net-like structure is formed into a sheet structure of an ultra-dense structure by roll compression of a take-off machine. The uniformity of the internal pressure of the dies so that the recycled PET resin is uniformly discharged from the dies, and the contact with the take-off conveyor that forms the shape of the molten resin extruded on the three or four sides of the aggregate when the three-dimensional or net-like sheet is manufactured. I did it. That is, the aggregate of the melted recycled PET resin is formed into a shape corresponding to the product shape on three or four surfaces. For example, if necessary, a resin aggregate is taken on a polygonal conveyor or the like to form a product. As one method of obtaining a three-dimensional net-like sheet, a three-dimensional net-like sheet is produced by extruding a plurality of dies of molten resin downward, and naturally descending between a water surface or a partially submerged conveyor to create a disordered spiral shape. Becomes Sheet width 1.0m, thickness 100
In the case of mm, it was confirmed that the density changed by changing the speed of the endless conveyor to confirm that the density changed. Furthermore, it was confirmed that the density changed with the change of the discharge amount of the extruder.

【００４３】スクリューの直径が７５ｍｍの単軸押出し
機に、１．０ｍ×１８０ｍｍの面積のダイス３３に、直
径０．５ｍｍとされた、ほぼ等間隔で約３５００個の孔
Ｈを有する口金３４を取り付けた。ダイス３３の下約１
２０ｍｍの位置に水位がある水槽１８を設置し、幅１．
２ｍの無端コンベア１４，１５を５０ｍｍの間隔をあけ
て１対、無端コンベア１４，１５の上部が４０ｍｍ程度
水面から出るようにほぼ垂直に設置した。In a single screw extruder having a screw diameter of 75 mm, a die 33 having an area of 1.0 mx 180 mm and a die 34 having a diameter of 0.5 mm and having approximately 3500 holes H at approximately equal intervals were placed. Attached. Approximately 1 below the dice 33
A water tank 18 having a water level at a position of 20 mm is installed.
A pair of 2 m endless conveyors 14 and 15 were installed at an interval of 50 mm and almost vertically so that the upper portions of the endless conveyors 14 and 15 came out of the water surface by about 40 mm.

【００４４】この装置で、再生ＰＥＴ樹脂を熱を加えて
可塑化しながら樹脂温度が２４０℃になるように、ダイ
ス３３の温度をコントロールして、１時間当たり１２０
ｋｇの押出し量で口金３４から出た溶融樹脂の集合体の
両面が無端コンベア１４，１５に落ちるようにそれらの
間に押出した。この時の無端コンベア１４，１５の引取
速度は０．７ｍ／分とした。無端コンベア１４，１５に
挟まれて下方へ移動した成形物は、水槽１８の下部で向
きを変え、押出し機とは反対の側から水面へと移動し、
水槽１８から出た時点で圧縮エアー又は真空ポンプで水
分を吹き飛ばした。With this apparatus, the temperature of the die 33 is controlled such that the resin temperature becomes 240.degree.
The assembly of the molten resin that came out of the die 34 with an extrusion amount of kg was extruded between the endless conveyors 14 and 15 so that both surfaces of the assembly fell down. At this time, the take-off speed of the endless conveyors 14, 15 was 0.7 m / min. The molded product that has been moved downward by being sandwiched between the endless conveyors 14 and 15 changes its direction at the lower part of the water tank 18 and moves from the side opposite to the extruder to the water surface,
The water was blown off with compressed air or a vacuum pump at the time of leaving the water tank 18.

【００４５】このようにして得られた三次元網目状構造
体は、幅１．０ｍ、厚さ５０ｍｍで、密度は、０．０７
ｇ／ｃｍ3〜０．１４ｇ／ｃｍ3が得られた。用途は、断
熱材、下地材、吸音材、排水パイプ等が挙げられる。The three-dimensional network structure thus obtained has a width of 1.0 m, a thickness of 50 mm and a density of 0.07.
g / cm 3 ~0.14g / cm 3 was obtained. Applications include heat insulating materials, base materials, sound absorbing materials, drainage pipes, and the like.

【００４６】以上説明した立体網状構造体１によれば、
後工程での仕上げを不要とし、整列度を高め、異形形状
への対応を可能とし、耐久性を向上させた立体網状構造
体の製造装置を提供できる。According to the three-dimensional network structure 1 described above,
It is possible to provide a manufacturing apparatus of a three-dimensional net-like structure which does not require finishing in a later step, increases the degree of alignment, can cope with an irregular shape, and has improved durability.

【００４７】また本実施形態により現状では用途のない
ＰＥＴボトルに立体網状構造体としての用途ができ、Ｐ
ＥＴボトルの回収率が高まると考えられる。これによ
り、ＰＥＴボトルのリサイクルが大いに促進される。According to this embodiment, a PET bottle having no use at present can be used as a three-dimensional network structure.
It is thought that the recovery rate of ET bottles will increase. This greatly facilitates PET bottle recycling.

【００４８】図１２は四面成型の立体網状構造体製造装
置５０の変更形態であり、図１２（ａ）は図９（ｂ）に
対応したものであり、前述の一対のロール５６，５７の
表面に単数又は複数の突部６０ａ〜６０ｃが形成された
ものである（ロール５７及びその突部は図示略）。これ
は、立体網状構造体の側面に凹みを形成するためであ
る。ロール５６，５７の突部６０ａ〜６０ｃは、断面角
形で且つ弧状に形成されている。理論的には前記の凹み
は角形になるはずであるが、樹脂糸が前述の通り上から
落ちてくるので、ブラインドが出来、実際には、樹脂糸
が入ってこない領域ができるので、立体網状構造体の側
面の凹みは曲線状のものになる。つまりアールを取るよ
うな感じになる。また、図１２（ｂ）は図９（ｃ）に対
応したものであり、前述の一対の無端コンベア６４，６
５の表面に単数又は複数の突部６６が形成されたもので
ある（無端コンベア６５及びその突部は図示略）。ま
た、前述のロール５６，５７又は無端コンベア６４，６
５の回転体にカムとばねを入れておいて、前述の突部
を、回転に同期させて、カムが突部を外方向に押出すよ
うに構成することもでき、これにより、前記のブライン
ドを減少させ、より精密な凹みを形成することができ
る。その他の構造は図９（ｂ），（ｃ）と同様であるか
ら、図示及び説明は援用する。FIG. 12 shows a modified embodiment of the four-sided molded three-dimensional net-like structure manufacturing apparatus 50. FIG. 12 (a) corresponds to FIG. 9 (b), and shows the surface of the pair of rolls 56 and 57 described above. A single or a plurality of protrusions 60a to 60c are formed on the roller 57 (the roll 57 and the protrusions are not shown). This is because a recess is formed on the side surface of the three-dimensional network structure. The protrusions 60a to 60c of the rolls 56 and 57 are formed in a rectangular cross section and in an arc shape. Theoretically, the dent should be square, but since the resin thread falls from above as described above, blinds can be made, and in fact there is an area where the resin thread does not enter, so a three-dimensional net-like The recess on the side of the structure is curved. In other words, it feels like taking a round. FIG. 12 (b) corresponds to FIG. 9 (c), and shows the pair of endless conveyors 64, 6 described above.
The endless conveyor 65 and its projections are not shown in the figure in which one or more projections 66 are formed on the surface of the endless conveyor 5. In addition, the above-mentioned rolls 56, 57 or endless conveyors 64, 6
5, a cam and a spring may be inserted into the rotating body, and the protrusion may be configured so that the cam pushes the protrusion outward in synchronization with the rotation. And a more precise depression can be formed. Other structures are the same as those shown in FIGS. 9B and 9C, and the illustration and description are incorporated.

【００４９】尚、本発明は、上述の実施の形態に限定さ
れるものではなく、本発明の技術的思想を逸脱しない範
囲に於て、改変等を加えることが出来るものであり、そ
れらの改変、均等物等も本発明の技術的範囲に含まれる
こととなる。It should be noted that the present invention is not limited to the above-described embodiment, but may be modified without departing from the technical idea of the present invention. , Equivalents and the like are also included in the technical scope of the present invention.

【００５０】[0050]

【発明の効果】請求項１乃至８の発明によれば、後工程
での仕上げを不要とし、整列度を高め、異形形状への対
応を可能とし、耐久性を向上させた立体網状構造体の製
造方法及び装置を提供でき、各種産業に与える工業的利
用価値は極めて大である。According to the first to eighth aspects of the present invention, there is provided a three-dimensional net-like structural body which does not require finishing in a later step, increases the degree of alignment, can cope with an irregular shape, and has improved durability. The production method and apparatus can be provided, and the industrial utility value given to various industries is extremely large.

【図面の簡単な説明】[Brief description of the drawings]

【図１】本発明第１実施形態の立体網状構造体の斜視図
である。FIG. 1 is a perspective view of a three-dimensional network structure according to a first embodiment of the present invention.

【図２】（ａ）は本発明第１実施形態の立体網状構造体
の縦断面図、（ｂ）は第２実施形態の立体網状構造体の
縦断面図、（ｃ）は第４実施形態の立体網状構造体の縦
断面図、（ｄ）は第５実施形態の立体網状構造体の縦断
面図、（ｅ）は第６実施形態の立体網状構造体の縦断面
図、（ｆ）は第７実施形態の立体網状構造体の縦断面
図、（ｇ）は第８実施形態の立体網状構造体の縦断面図
である。2A is a longitudinal sectional view of a three-dimensional network structure according to a first embodiment of the present invention, FIG. 2B is a longitudinal sectional view of a three-dimensional network structure according to a second embodiment, and FIG. (D) is a longitudinal sectional view of the three-dimensional network structure of the fifth embodiment, (e) is a longitudinal sectional view of the three-dimensional network structure of the sixth embodiment, and (f) is a longitudinal sectional view of the three-dimensional network structure of the sixth embodiment. FIG. 14 is a longitudinal sectional view of a three-dimensional network structure according to a seventh embodiment, and FIG. 14G is a longitudinal sectional view of a three-dimensional network structure according to an eighth embodiment.

【図３】（ａ）は第９実施形態の立体網状構造体の縦断
面図、（ｂ）は第９実施形態の立体網状構造体の側面図
である。FIG. 3A is a longitudinal sectional view of a three-dimensional network structure of a ninth embodiment, and FIG. 3B is a side view of the three-dimensional network structure of the ninth embodiment.

【図４】（ａ）〜（ｇ）は本発明第３実施形態の立体網
状構造体の断面図である。FIGS. 4A to 4G are cross-sectional views of a three-dimensional network structure according to a third embodiment of the present invention.

【図５】本発明実施形態の立体網状構造体製造装置の斜
視図である。FIG. 5 is a perspective view of the three-dimensional network structure manufacturing apparatus according to the embodiment of the present invention.

【図６】本発明実施形態の立体網状構造体製造装置の動
作状況を示す説明図である。FIG. 6 is an explanatory diagram showing an operation state of the three-dimensional network structure manufacturing apparatus according to the embodiment of the present invention.

【図７】（ａ），（ｂ）は同立体網状構造体製造装置の
無端コンベアの側面図及び正面図である。FIGS. 7 (a) and 7 (b) are a side view and a front view of an endless conveyor of the three-dimensional network structure manufacturing apparatus.

【図８】（ａ）〜（ｆ）は同立体網状構造体製造装置及
び変更形態の無端コンベアの側面図である。8 (a) to 8 (f) are side views of the same three-dimensional network structure manufacturing apparatus and a modified endless conveyor.

【図９】（ａ）は四面成形の場合の立体網状構造体製造
装置の無端コンベアの平面図、（ｂ）は同立体網状構造
体製造装置の側面図、（ｃ）は他の形態の四面成形の立
体網状構造体製造装置の側面図、（ｄ）は同立体網状構
造体製造装置による四面成形の様子を示す平面図、
（ｅ）は同立体網状構造体製造装置による三面成形の様
子を示す平面図である。9A is a plan view of an endless conveyor of the three-dimensional network structure manufacturing apparatus in the case of four-sided molding, FIG. 9B is a side view of the three-dimensional network structure manufacturing apparatus, and FIG. Side view of a molding three-dimensional network structure manufacturing apparatus, (d) is a plan view showing a state of four-side molding by the three-dimensional network structure manufacturing apparatus,
(E) is a plan view showing a state of three-side molding by the three-dimensional network structure manufacturing apparatus.

【図１０】四面成形の場合の独立駆動構造の立体網状構
造体製造装置の無端コンベアの平面図である。FIG. 10 is a plan view of an endless conveyor of a three-dimensional net-like structure manufacturing apparatus having an independent drive structure in the case of four-sided molding.

【図１１】（ａ）〜（ｈ）はダイスの口金の各種形態を
示す平面図及び正面図である。11A to 11H are a plan view and a front view showing various forms of a die base.

【図１２】（ａ），（ｂ）は変更形態の四面成形用の立
体網状構造体製造装置の無端コンベアの正面図である。FIGS. 12A and 12B are front views of an endless conveyor of a modified three-dimensional network structure manufacturing apparatus for four-sided molding.

【符号の説明】[Explanation of symbols]

１〜７…立体網状構造体、４Ａ，４Ｂ…中空部、５Ａ，
５Ｂ…中空部、５Ｃ，５Ｄ…再生部材、６Ａ，６Ｂ，６
Ｃ…梁、１０…立体網状構造体製造装置、１１…押出成
形機、１２，１３…無端部材、１４，１５…無端コンベ
ア、１４ａ…スプロケット、１４ｂ…駆動軸、１４ｃ…
スプロケット、１４ｄ…従動軸、１５ａ…スプロケッ
ト、１５ｂ…従動軸、１５ｃ…スプロケット、１５ｄ…
従動軸、１６…駆動モータ、１７…変速機、１８…水
槽、１９…制御装置、３１…コンテナ、３２…原料供給
口、３３…ダイス、３４…口金、５０…立体網状構造体
製造装置、５４，５５…無端コンベア、５４ａ，５５ａ
…回転軸、５４ｂ，５４ｃ…傘歯車、５６，５７…ロー
ル、５６ａ，５７ａ…回転軸、５６ｂ，５７ｂ…傘歯
車、５８ａ，５８ｂ…軸受1 to 7: three-dimensional network structure, 4A, 4B: hollow portion, 5A,
5B: hollow portion, 5C, 5D: reproduction member, 6A, 6B, 6
C: beam, 10: three-dimensional network structure manufacturing apparatus, 11: extrusion molding machine, 12, 13: endless member, 14, 15: endless conveyor, 14a: sprocket, 14b: drive shaft, 14c ...
Sprocket, 14d: driven shaft, 15a: sprocket, 15b: driven shaft, 15c: sprocket, 15d ...
Driven shaft, 16: drive motor, 17: transmission, 18: water tank, 19: control device, 31: container, 32: raw material supply port, 33: die, 34: base, 50: three-dimensional network structure manufacturing apparatus, 54 , 55 ... Endless conveyor, 54a, 55a
... rotating shafts, 54b, 54c ... bevel gears, 56, 57 ... rolls, 56a, 57a ... rotating shafts, 56b, 57b ... bevel gears, 58a, 58b ... bearings

Claims (8)

【特許請求の範囲】[Claims] 【請求項１】 熱可塑性樹脂を原料又は主原料とする溶
融した線条を複数の孔を有するダイスから下方へ押し出
し、一部水没した、無端部材を備えた少なくとも１個の
無端コンベアの間に自然降下させ、該降下速度より前記
線条を遅く引き込むことにより立体網目状構造体を製造
する際、押出された線条の集合体の幅より前記無端コン
ベアの間隔が狭く設定され、前記無端部材が水没する前
後に前記線条の集合体の外周の少なくとも三面又は四面
が前記無端部材に接触することを特徴とした立体網状構
造体の製造方法。1. A molten wire made of a thermoplastic resin or a main material is extruded downward from a die having a plurality of holes, and is partially submerged between at least one endless conveyor provided with an endless member. When producing a three-dimensional network-like structure by lowering naturally and pulling the filaments slower than the descending speed, the interval between the endless conveyors is set to be narrower than the width of the aggregate of extruded filaments, and the endless member A method of manufacturing a three-dimensional net-like structure, characterized in that at least three or four surfaces of the outer periphery of the aggregate of the filaments come into contact with the endless member before and after submerging in water. 【請求項２】 前記立体網目状構造体の外周の三面又は
四面のいずれかの表面側の密度が、前記表面側を除く部
分の密度より相対的に低いことを特徴とする請求項１記
載の立体網状構造体の製造方法。2. The method according to claim 1, wherein a density of one of three or four outer surfaces of the three-dimensional network structure is relatively lower than a density of a portion excluding the surface. A method for producing a three-dimensional network structure. 【請求項３】 前記立体網目状構造体の外周の三面又は
四面のいずれかの表面側及び中間部の密度が、前記表面
側を除く部分の密度より相対的に低いことを特徴とする
請求項２記載の立体網状構造体の製造方法。3. A density of a surface portion and an intermediate portion of any one of three or four surfaces of an outer periphery of the three-dimensional network structure is relatively lower than a density of a portion excluding the surface side. 3. The method for producing a three-dimensional network structure according to 2. 【請求項４】 複数の孔を有する口金を先端部に有する
ダイスを備え、熱可塑性樹脂を原料又は主原料とする溶
融した線条を前記口金から下方へ押し出す押し出し成形
機と、 水槽と、 該水槽に一部水没した、無端部材を備えた、少なくとも
２個の無端コンベアと、を備え、 前記線条を前記無端コンベアの間に降下させ、該降下速
度より前記線条を遅く引き込むように前記無端コンベア
の速度を設定し、 前記押し出された線条の集合体の幅より前記無端コンベ
アの間隔が狭く設定され、 前記無端部材が水没する前後に前記線条の集合体の外周
の少なくとも三面又は四面が前記無端部材に接触するこ
とを特徴とした立体網状構造体製造装置。4. An extruder, comprising: a die having a die having a plurality of holes at a tip end thereof, and extruding a molten wire made of a thermoplastic resin as a raw material or a main raw material downward from the die, a water tank, At least two endless conveyors provided with an endless member, partially submerged in a water tank, wherein the line is lowered between the endless conveyors, and the line is drawn down more slowly than the descending speed. Set the speed of the endless conveyor, the interval between the endless conveyor is set to be narrower than the width of the aggregate of the extruded filaments, at least three surfaces of the outer periphery of the aggregate of the filaments before and after the endless member is submerged or An apparatus for manufacturing a three-dimensional net-like structure, wherein four surfaces are in contact with the endless member. 【請求項５】 複数の孔を有する口金を先端部に有する
ダイスを備え、熱可塑性樹脂を原料又は主原料とする溶
融した線条を前記口金から下方へ押し出す押し出し成形
機と、 水槽と、 該水槽に一部水没した、無端部材を備えた、少なくとも
２個の無端コンベアと、を備え、 前記線条を前記無端コンベアの間に降下させ、該降下速
度より前記線条を遅く引き込むように前記無端コンベア
の速度を設定し、 前記押し出された線条の集合体の幅より前記無端コンベ
アの間隔が狭く設定され、 前記無端部材が水没する前後に前記線条の集合体の外周
の少なくとも二面が前記無端部材に接触し、前記無端コ
ンベアのベルト断面が異形断面とされたことを特徴とし
た立体網状構造体製造装置。5. An extruder, comprising: a die having a die having a plurality of holes at a tip end thereof, and extruding a molten wire made of a thermoplastic resin as a raw material or a main raw material downward from the die, a water tank, At least two endless conveyors provided with an endless member, partially submerged in a water tank, wherein the line is lowered between the endless conveyors, and the line is drawn down more slowly than the descending speed. The speed of the endless conveyor is set, the interval between the endless conveyors is set to be narrower than the width of the extruded line assembly, and at least two surfaces of the outer periphery of the line assembly before and after the endless member is submerged. A three-dimensional net-like structure manufacturing apparatus, wherein the endless member contacts the endless member, and the belt cross section of the endless conveyor has an irregular cross section. 【請求項６】 複数の孔を有する口金を先端部に有する
ダイスを備え、熱可塑性樹脂を原料又は主原料とする溶
融した線条を前記口金から下方へ押し出す押し出し成形
機と、 水槽と、 該水槽に一部水没した、無端部材を備えた、少なくとも
２個の無端コンベアと、を備え、 前記線条を前記無端コンベアの間に降下させ、該降下速
度より前記線条を遅く引き込むように前記無端コンベア
の速度を設定し、 前記押し出された線条の集合体の幅より前記無端コンベ
アの間隔が狭く設定され、 前記無端部材が水没する前後に前記線条の集合体の外周
の少なくとも二面が前記無端部材に接触し、前記無端コ
ンベアの複数条のチェーンにベルト部材として板状の多
数の金属材を直交して周設したことを特徴とした立体網
状構造体製造装置。6. An extruder, comprising: a die having a die having a plurality of holes at a tip end thereof, and extruding a molten wire made of a thermoplastic resin as a raw material or a main raw material downward from the die, a water tank, At least two endless conveyors provided with an endless member, partially submerged in a water tank, wherein the line is lowered between the endless conveyors, and the line is drawn down more slowly than the descending speed. The speed of the endless conveyor is set, the interval between the endless conveyors is set to be narrower than the width of the extruded line assembly, and at least two surfaces of the outer periphery of the line assembly before and after the endless member is submerged. A three-dimensional net-like structure manufacturing apparatus, wherein a large number of plate-like metal materials are orthogonally provided around a plurality of chains of the endless conveyor as belt members around the endless conveyor. 【請求項７】 複数の孔を有する口金を先端部に有する
ダイスを備え、熱可塑性樹脂を原料又は主原料とする溶
融した線条を前記口金から下方へ押し出す押し出し成形
機と、 水槽と、 該水槽に一部水没した、無端部材を備えた、少なくとも
２個の無端コンベアと、を備え、 前記線条を前記無端コンベアの間に降下させ、該降下速
度より前記線条を遅く引き込むように前記無端コンベア
の速度を設定し、 前記押し出された線条の集合体の幅より前記無端コンベ
アの間隔が狭く設定され、 前記無端部材が水没する前後に前記線条の集合体の中空
部が形成されるように前記口金に閉塞部を形成したこと
を特徴とした立体網状構造体製造装置。7. An extruder, comprising: a die having a die having a plurality of holes at a tip end thereof, and extruding a molten wire made of a thermoplastic resin as a raw material or a main raw material downward from the die, a water tank, At least two endless conveyors provided with an endless member, partially submerged in a water tank, wherein the line is lowered between the endless conveyors, and the line is drawn down more slowly than the descending speed. The speed of the endless conveyor is set, the interval between the endless conveyors is set to be narrower than the width of the extruded filament aggregate, and the hollow portion of the filament aggregate is formed before and after the endless member is submerged. A three-dimensional net-like structure manufacturing apparatus characterized in that a closed portion is formed in the base as described above. 【請求項８】 複数の孔を有する口金を先端部に有する
ダイスを備え、熱可塑性樹脂を原料又は主原料とする溶
融した線条を前記口金から下方へ押し出す押し出し成形
機と、 水槽と、 該水槽に一部水没した、無端部材を備えた、少なくとも
２個の無端コンベアと、を備え、 前記線条を前記無端コンベアの間に降下させ、該降下速
度より前記線条を遅く引き込むように前記無端コンベア
の速度を設定し、 前記押し出された線条の集合体の幅より前記無端コンベ
アの間隔が狭く設定され、 前記無端部材が水没する前後に前記線条の集合体の所定
方向に粗密ができるよう、前記口金に孔の密度の高い領
域及び低い領域を形成したことを特徴とした立体網状構
造体製造装置。8. An extruder, comprising: a die having a die having a plurality of holes at a tip end thereof; and extruding a molten wire made of a thermoplastic resin as a raw material or a main raw material downward from the die, a water tank, At least two endless conveyors provided with an endless member, partially submerged in a water tank, wherein the line is lowered between the endless conveyors, and the line is drawn down more slowly than the descending speed. The speed of the endless conveyor is set, the interval between the endless conveyors is set to be narrower than the width of the aggregate of the extruded filaments, and the density of the aggregate of the filaments is determined in a predetermined direction before and after the endless member is submerged. An apparatus for manufacturing a three-dimensional net-like structure, wherein a region having a high hole density and a region having a low hole density are formed in the base so as to be able to be formed.
JP2000281329A 2000-03-15 2000-09-18 Three-dimensional network structure manufacturing method, three-dimensional network structure manufacturing apparatus, and three-dimensional network structure Expired - Fee Related JP4350286B2 (en)

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JP2000281329A JP4350286B2 (en) 2000-03-15 2000-09-18 Three-dimensional network structure manufacturing method, three-dimensional network structure manufacturing apparatus, and three-dimensional network structure
AU41148/01A AU4114801A (en) 2000-03-15 2001-03-15 Three-dimensional net-like structure, and method and device for producing three-dimensional net-like structure
US10/221,568 US7625629B2 (en) 2000-03-15 2001-03-15 Three-dimensional net-like structure, and method and device for producing three dimensional net-like structure
AT01912385T ATE470741T1 (en) 2000-03-15 2001-03-15 THREE-DIMENSIONAL NETWORK STRUCTURE, METHOD AND DEVICE
PCT/JP2001/002046 WO2001068967A1 (en) 2000-03-15 2001-03-15 Three-dimensional net-like structure, and method and device for producing three-dimensional net-like structure
DE60142331T DE60142331D1 (en) 2000-03-15 2001-03-15 THREE-DIMENSIONAL NETWORK STRUCTURE, METHOD AND DEVICE
EP01912385A EP1270787B1 (en) 2000-03-15 2001-03-15 Three-dimensional net-like structure, and method and device for producing three-dimensional net-like structure
ES01912385T ES2346180T3 (en) 2000-03-15 2001-03-15 THREE-DIMENSIONAL STRUCTURE OF NETWORK TYPE, PROCEDURE AND DEVICE FOR THE PRODUCTION OF STRUCTURE.
US12/494,421 US7993734B2 (en) 2000-03-15 2009-06-30 Three-dimensional net-like structure, and method and device for producing three-dimensional net-like structure
US12/497,567 US8563121B2 (en) 2000-03-15 2009-07-03 Three-dimensional netted structure having four molded surfaces
US13/228,008 US8226882B2 (en) 2000-03-15 2011-09-08 Apparatus and method for manufacturing three-dimensional netted structure
US13/344,653 US8757996B2 (en) 2000-03-15 2012-01-06 Apparatus and method for manufacturing three-dimensional netted structure
US13/429,517 US8277210B2 (en) 2000-03-15 2012-03-26 Apparatus and method for manufacturing three-dimensional netted structure
US13/570,880 US8563123B2 (en) 2000-03-15 2012-08-09 Three-dimensional netted structure having four molded surfaces
US13/600,279 US8828293B2 (en) 2000-03-15 2012-08-31 Apparatus and method for manufacturing three-dimensional netted structure
US13/600,304 US8568635B2 (en) 2000-03-15 2012-08-31 Method for manufacturing three-dimensional netted structure having four molded surfaces
US14/048,062 US9169585B2 (en) 2000-03-15 2013-10-08 Three dimensional netted structure
US14/050,417 US9174404B2 (en) 2000-03-15 2013-10-10 Method for manufacturing three-dimensional netted structure
US14/050,416 US9194066B2 (en) 2000-03-15 2013-10-10 Three dimensional netted structure
US14/849,635 US10328618B2 (en) 2000-03-15 2015-09-10 Three dimensional netted structure
US14/852,646 US9561612B2 (en) 2000-03-15 2015-09-14 Method for manufacturing three-dimensional netted structure
US14/884,806 US10266977B2 (en) 2000-03-15 2015-10-16 Device and method for manufacturing three-dimensional netted structure and product made

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