JP2002036335A - WOOD FORM AND MANUFACTURING METHOD THEREOF - Google Patents
WOOD FORM AND MANUFACTURING METHOD THEREOFInfo
- Publication number
- JP2002036335A JP2002036335A JP2000230315A JP2000230315A JP2002036335A JP 2002036335 A JP2002036335 A JP 2002036335A JP 2000230315 A JP2000230315 A JP 2000230315A JP 2000230315 A JP2000230315 A JP 2000230315A JP 2002036335 A JP2002036335 A JP 2002036335A
- Authority
- JP
- Japan
- Prior art keywords
- thermoplastic resin
- cylinder
- foam
- wood material
- wood
- 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
Links
- 239000002023 wood Substances 0.000 title claims abstract description 38
- 238000004519 manufacturing process Methods 0.000 title claims description 12
- 229920005992 thermoplastic resin Polymers 0.000 claims abstract description 61
- 239000000463 material Substances 0.000 claims abstract description 40
- 239000006260 foam Substances 0.000 claims abstract description 34
- 238000001816 cooling Methods 0.000 claims abstract description 8
- 239000000203 mixture Substances 0.000 claims description 15
- 238000002156 mixing Methods 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 8
- 238000007664 blowing Methods 0.000 claims description 5
- 238000005096 rolling process Methods 0.000 claims description 5
- 239000002699 waste material Substances 0.000 claims description 5
- 238000000465 moulding Methods 0.000 claims description 3
- 238000001125 extrusion Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 2
- 239000011230 binding agent Substances 0.000 abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000005187 foaming Methods 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 4
- -1 polyethylene Polymers 0.000 description 4
- 238000005507 spraying Methods 0.000 description 4
- 239000004743 Polypropylene Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 239000000155 melt Substances 0.000 description 3
- 229920001155 polypropylene Polymers 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 230000001680 brushing effect Effects 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 238000007731 hot pressing Methods 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 230000008961 swelling Effects 0.000 description 2
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000877 Melamine resin Polymers 0.000 description 1
- 239000004640 Melamine resin Substances 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 229920001131 Pulp (paper) Polymers 0.000 description 1
- 229920001807 Urea-formaldehyde Polymers 0.000 description 1
- 229920002522 Wood fibre Polymers 0.000 description 1
- XECAHXYUAAWDEL-UHFFFAOYSA-N acrylonitrile butadiene styrene Chemical compound C=CC=C.C=CC#N.C=CC1=CC=CC=C1 XECAHXYUAAWDEL-UHFFFAOYSA-N 0.000 description 1
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 1
- 239000004676 acrylonitrile butadiene styrene Substances 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 235000013312 flour Nutrition 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000193 polymethacrylate Polymers 0.000 description 1
- 229920005672 polyolefin resin Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920002689 polyvinyl acetate Polymers 0.000 description 1
- 239000011118 polyvinyl acetate Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000002940 repellent Effects 0.000 description 1
- 239000005871 repellent Substances 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 229920003048 styrene butadiene rubber Polymers 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 239000001993 wax Substances 0.000 description 1
- 239000002025 wood fiber Substances 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/78—Recycling of wood or furniture waste
Landscapes
- Molding Of Porous Articles (AREA)
- Processing Of Solid Wastes (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
(57)【要約】
【課題】本発明は熱可塑性樹脂をバインダーとして木質
成形体を効率良く製造することを課題とする。
【解決手段】押出成形機１によって木質材料Ｔに熱可塑
性樹脂溶融発泡物Ｒとを混合し、ダイ１８から板状に押
出し、該板状成形物Ｍを挟持冷却手段２１で挟持冷却す
る。
(57) [Problem] It is an object of the present invention to efficiently produce a wooden molded body using a thermoplastic resin as a binder. A wood material (T) and a thermoplastic resin melt foam (R) are mixed by an extruder (1), extruded into a plate shape from a die (18), and sandwiched and cooled by a sandwich cooling means (21).
Description
【０００１】[0001]
【発明の属する技術分野】本発明は建築板に使用される
木質成形体およびその製造方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wooden molded product used for building boards and a method for producing the same.
【０００２】[0002]
【従来の技術】例えば従来のハードボード等の木質成形
体にあっては、木質材料にバインダーとしてフェノール
樹脂、尿素樹脂、メラミン樹脂等の熱硬化性樹脂を添加
してホットプレスすることによって製造される。上記バ
インダーとして熱可塑性樹脂が使用されると、該熱可塑
性樹脂としてリサイクル品が使用出来るし、また該熱可
塑性樹脂をバインダーとして使用した木質成形体の廃品
もチップにしてリサイクルし易くなる。2. Description of the Related Art For example, a conventional wooden molded product such as a hard board is manufactured by adding a thermosetting resin such as a phenol resin, a urea resin or a melamine resin as a binder to a wooden material and hot pressing. You. When a thermoplastic resin is used as the binder, a recycled product can be used as the thermoplastic resin, and a waste wood product using the thermoplastic resin as a binder can be easily recycled as chips.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら上記従来
の製造方法にあって、熱可塑性樹脂をバインダーとして
使用して木質成形体を製造する場合には、ホットプレス
の後更にコールドプレスをする必要があり、工程が多く
手間がかゝるし、またプレス装置が二つ必要となり設備
費が高くなる。However, in the above-mentioned conventional production method, when a wooden molded article is produced by using a thermoplastic resin as a binder, it is necessary to further perform cold pressing after hot pressing. In addition, the number of steps is long and time-consuming, and two press units are required, resulting in high equipment costs.
【０００４】[0004]
【課題を解決するための手段】本発明は上記従来の課題
を解決するための手段として、木質材料Ｔと熱可塑性樹
脂溶融発泡物Ｒとを混合して成形した木質成形体を提供
するものである。該熱可塑性樹脂溶融発泡物Ｒは熱可塑
性樹脂を溶融させたところに圧搾空気を吹込んでホイッ
プすることによって形成することが望ましく、また該熱
可塑性樹脂溶融発泡物Ｒは熱可塑性樹脂廃材を使用して
いることが望ましい。更に本発明は押出成形機(1) のシ
リンダ(2) 根端部に取付けられているホッパー(3) から
シリンダ(2) 内に木質材料Ｔを投入し、該シリンダ(2)
に内設されているスクリュー(4) を回転させて該木質材
料Ｔをシリンダ(2) 先端側に送り、該シリンダ(2) の中
間部において熱可塑性樹脂溶融発泡物Ｒを該木質材料Ｔ
に添加混合し、該シリンダ(2) 先端のダイ(18)から該木
質材料Ｔと熱可塑性樹脂溶融発泡物Ｒとの混合物Ａを板
状に押出し、圧延ロール(19,20) で圧延した後該板状成
形物Ｍを挟持冷却手段(21)によって冷却する木質成形体
の製造方法を提供するものである。該押出成形機(1) の
シリンダ(2) 中間部の熱可塑性樹脂溶融発泡物Ｒ添加混
合部において、シリンダ(2) 外周にはジャケット(6) を
周設し、該ジャケット(6) には加熱手段(6A)を内挿して
該木質材料Ｔと該熱可塑性樹脂溶融発泡物Ｒとを加熱す
ることが望ましく、また該熱可塑性樹脂溶融発泡物Ｒは
熱可塑性樹脂溶融物がシリンダ(2) 内に添加される前に
圧搾空気を吹込んでホイップすることによって形成され
ることが望ましい。また更に本発明は木質材料Ｔと熱可
塑性樹脂溶融発泡物Ｒとの混合物Ａを型板上に散布して
マットをフォーミングし、該マットをプレスして成形す
る木質成形体の製造方法を提供するものである。該型板
はロールコンベア上を移動し、該型板上にフォーミング
されたマットは熱間ロールプレスされ、その後冷間ロー
ルプレスされることが望ましい。According to the present invention, as a means for solving the above-mentioned conventional problems, there is provided a wooden molded article formed by mixing a wooden material T and a thermoplastic resin melt foam R. is there. It is desirable that the thermoplastic resin molten foam R is formed by blowing compressed air into the place where the thermoplastic resin is melted and whipping, and the thermoplastic resin molten foam R uses thermoplastic resin waste material. Is desirable. Further, in the present invention, wood material T is introduced into a cylinder (2) from a hopper (3) attached to a cylinder (2) root end of an extruder (1).
By rotating a screw (4) provided inside the cylinder (2), the wood material T is sent to the tip side of the cylinder (2), and the thermoplastic resin molten foam R is transferred to the wood material T at an intermediate portion of the cylinder (2).
The mixture A of the woody material T and the thermoplastic resin melt foam R is extruded into a plate shape from the die (18) at the tip of the cylinder (2), and is then rolled by rolling rolls (19, 20). An object of the present invention is to provide a method for producing a wooden molded product in which the plate-shaped molded product M is cooled by the sandwiching cooling means (21). In the mixing section of the thermoplastic resin molten foam R in the middle of the cylinder (2) of the extruder (1), a jacket (6) is provided around the outer periphery of the cylinder (2). It is desirable to heat the wood material T and the thermoplastic resin melt foam R by interpolating a heating means (6A), and the thermoplastic resin melt foam R is formed by a thermoplastic resin melt in a cylinder (2). Desirably, it is formed by blowing compressed air and whipping before being added into the interior. Still further, the present invention provides a method for producing a wooden molded body, in which a mixture A of a wooden material T and a thermoplastic resin molten foam R is sprayed on a template, a mat is formed, and the mat is pressed and molded. Things. The template moves on a roll conveyor, and the mat formed on the template is preferably hot roll-pressed and then cold roll-pressed.
【０００５】[0005]
【発明の実施の形態】〔木質材料〕本発明において使用
される木質材料とは、例えば木片、ストランド、木粉、
木毛、木質繊維束、木質パルプ等、あるいは木造建築物
を構築あるいは解体するときに発生する端切れや廃材等
の粉砕物であり、特に幅１〜５mm、長さ５〜２０mm、厚
み０．２〜２mmの木片が望ましい。また、上記木質材料
が水分を多量含んでいると、加熱の際木片から水蒸気が
発生し、木質材料と熱可塑性樹脂溶融発泡物との間に水
蒸気膜が形成され、木質材料と熱可塑性樹脂溶融発泡物
との密着が不充分になるため、通常木質材料は原料を細
分化した後にドライヤーにて木質材料の含水率を５％未
満に乾燥しておく。DESCRIPTION OF THE PREFERRED EMBODIMENTS [Wood material] The wood material used in the present invention includes, for example, wood chips, strands, wood flour,
Wood wool, wood fiber bundles, wood pulp, etc., or crushed materials such as scraps and waste materials generated when building or dismantling a wooden building, particularly 1 to 5 mm in width, 5 to 20 mm in length, and 0.2 in thickness A ~ 2 mm piece of wood is preferred. If the wood material contains a large amount of water, steam is generated from the wood chips during heating, and a steam film is formed between the wood material and the thermoplastic resin melt foam, and the wood material and the thermoplastic resin melt. Since the adhesion to the foam becomes insufficient, usually the wood material is dried to a moisture content of less than 5% with a dryer after the raw material is subdivided.
【０００６】〔熱可塑性樹脂〕本発明において使用され
る熱可塑性樹脂としては、主としてポリエチレン、ポリ
プロピレン等のポリオレフィン系樹脂が使用されるが、
ポリスチレン、ポリメタクリレート、ポリアミド、ポリ
エステル、ポリ酢酸ビニル、アクリル樹脂、アクリロニ
トリル−ブタジェン共重合体、スチレン−ブタジェン共
重合体、アクリロニトリル−ブタジェン−スチレン共重
合体等の熱可塑性樹脂でもよい。上記熱可塑性樹脂は二
種以上混合使用されてもよく、また上記熱可塑性樹脂の
廃材の再生品であってもよい。[Thermoplastic Resin] As the thermoplastic resin used in the present invention, polyolefin resins such as polyethylene and polypropylene are mainly used.
Thermoplastic resins such as polystyrene, polymethacrylate, polyamide, polyester, polyvinyl acetate, acrylic resin, acrylonitrile-butadiene copolymer, styrene-butadiene copolymer, and acrylonitrile-butadiene-styrene copolymer may be used. The thermoplastic resin may be used as a mixture of two or more kinds, or may be a recycled product of the waste material of the thermoplastic resin.
【０００７】〔熱可塑性樹脂溶融発泡物〕熱可塑性樹脂
溶融発泡物は、上記熱可塑性樹脂の溶融物を発泡室にお
いて圧搾空気を吹込みホイップすることによって形成さ
れる。この場合該熱可塑性樹脂溶融物は攪拌機によって
攪拌されてもよい。[Thermoplastic Melt Foam] The thermoplastic resin melt foam is formed by blowing the above melt of the thermoplastic resin in a foaming chamber with compressed air and whipping. In this case, the thermoplastic resin melt may be stirred by a stirrer.
【０００８】〔配合〕木質材料と熱可塑性樹脂との混合
重量比は通常５０：５０〜８０：２０程度とする。しか
し該熱可塑性樹脂は溶融発泡されるので、木質材料と熱
可塑性樹脂との混合重量比が８０：２０であっても、発
泡後のかさは圧倒的に熱可塑性樹脂溶融発泡物の方が大
きい。本発明の木質成形体には、木質材料と熱可塑性樹
脂の他にゴムやエラストマー等の耐衝撃性改良材、シリ
コン、ワックス、パラフィン等の撥水剤等が添加されて
もよい。[Mixing] The mixing weight ratio of the woody material and the thermoplastic resin is usually about 50:50 to 80:20. However, since the thermoplastic resin is melt-foamed, even if the mixing weight ratio of the wood material and the thermoplastic resin is 80:20, the bulk after foaming is overwhelmingly larger in the thermoplastic resin foam. . In addition to the wood material and the thermoplastic resin, an impact resistance improving material such as rubber or elastomer, a water repellent such as silicon, wax, paraffin, or the like may be added to the wood molded product of the present invention.
【０００９】〔木質成形体の製造方法〕本発明を図１お
よび図２に示す一実施例によって説明すれば、押出機
(1) のシリンダ(2) 内根端部にはホッパー(3) から木質
材料Ｔが投入され、該木質材料Ｔは該シリンダ(2) に内
設されモーター(5) によって駆動回転されているスクリ
ュー(4) によって図１矢印イに示すシリンダ(2) 先端側
に送られる。該スクリュー(4) は連続のスクリューでは
なく、パドルミキサータイプのものでもよい。該シリン
ダ(2) 中間部外側にはジャケット(6) が周設され、図２
に示すように該ジャケット(6) 内には加熱手段として加
熱ヒータ(6A)がシリンダ(2) の外周にそってまかれてお
り、上記シリンダ(2) 内に供給された木質材料Ｔは予熱
され、かつ乾燥される。該シリンダ(2) 内の温度は通常
１８０〜２３０℃に設定される。加熱手段としては加熱
ヒータ(6A)以外に油等の熱媒体、加熱空気等を用いても
よい。[Method of Manufacturing Wood-Molded Body] The present invention will be described with reference to an embodiment shown in FIGS.
A wood material T is supplied from a hopper (3) to the inner root end of the cylinder (2) of (1), and the wood material T is provided inside the cylinder (2) and driven and rotated by a motor (5). The screw (4) is fed to the tip of the cylinder (2) shown by the arrow (a) in FIG. The screw (4) is not a continuous screw but may be a paddle mixer type. A jacket (6) is provided around the middle part of the cylinder (2).
As shown in (2), a heater (6A) as heating means is wrapped around the outer periphery of the cylinder (2) in the jacket (6), and the wood material T supplied into the cylinder (2) is preheated. And dried. The temperature in the cylinder (2) is usually set at 180 to 230 ° C. As the heating means, a heat medium such as oil, heated air, or the like may be used in addition to the heater (6A).
【００１０】上記シリンダ(2) のジャケット(6) 部分に
おいて、シリンダ(2) には熱可塑性樹脂溶融発泡物Ｒが
供給される。即ち熱可塑性樹脂は溶融供給器(11)のホッ
パー(12)からシリンダ(13)内に投入され、該シリンダ(1
3)内で加熱溶融されつゝ該シリンダ(13)に内設されモー
ター(15)によって駆動回転されているスクリュー(14)に
よって発泡室(16)に送られる。In the portion of the jacket (6) of the cylinder (2), a thermoplastic resin molten foam R is supplied to the cylinder (2). That is, the thermoplastic resin is put into the cylinder (13) from the hopper (12) of the melt feeder (11), and the cylinder (1)
It is heated and melted in 3), and is sent to the foaming chamber (16) by a screw (14) provided in the cylinder (13) and driven and rotated by a motor (15).
【００１１】該発泡室(16)内に送られた熱可塑性樹脂溶
融物にはブロア(17)によって圧搾空気が送り込まれ、ホ
イップされることによって泡状の熱可塑性樹脂溶融発泡
物Ｒになり、この状態でシリンダ(2) 内に供給され木質
材料Ｔに混合される。上記したように熱可塑性樹脂溶融
発泡物Ｒは泡状の溶融発泡物になっているので、通常の
熱可塑性樹脂溶融物の数倍〜数十倍のかさになり、木質
材料Ｔに対する分散性が格段に向上し、木質材料Ｔにま
んべんなく付着し均一に混合される。またこの部分では
ジャケット(6) 内の加熱ヒータ(6A)でシリンダ(2) 内が
加熱されているので、熱可塑性樹脂溶融発泡物Ｒは木質
材料Ｔに混合される時点で冷却固化することなく、均一
に混合し好都合な溶融状態を維持する。Compressed air is blown into the thermoplastic resin melt sent into the foaming chamber (16) by a blower (17) and is whipped to form a foamed thermoplastic resin melt foam R, In this state, it is supplied into the cylinder (2) and mixed with the woody material T. As described above, since the thermoplastic resin molten foam R is a foamed molten foam, it has a volume several to several tens times that of a normal thermoplastic resin melt, and the dispersibility in the woody material T is remarkably increased. It is improved and evenly adheres to the wooden material T and is uniformly mixed. In this part, since the inside of the cylinder (2) is heated by the heater (6A) in the jacket (6), the thermoplastic resin molten foam R does not solidify by cooling when mixed with the wood material T. , Homogeneously mixed and maintained in a convenient molten state.
【００１２】このようにして熱可塑性樹脂溶融発泡物Ｒ
を均一に混合された木質材料Ｔはシリンダ(2) 先端側に
送られ、この部分である程度圧密されつゝダイ(18)から
板状に押出される。ダイ(18)から押出された板状成形物
Ｍ中の熱可塑性樹脂溶融発泡物Ｒはこの時点ではほとん
ど脱泡されておらず、該板状成形物Ｍは低密度の粗な状
態となっている。該板状成形物Ｍは一連の圧延ロール(1
9,20) によって圧延され、この時点で該板状成形物Ｍは
脱気され、該板状成形物Ｍは所定の比重、厚みに調節さ
れる。そして最後に挟持冷却手段であるキャタピラープ
レス(21)によって挟持冷却され、カッター(22)によって
所定寸法に切断され製品Ｐになる。Thus, the thermoplastic resin molten foam R
Is uniformly fed to the cylinder (2), where it is compacted to some extent and extruded into a plate shape from a die (18). At this point, the thermoplastic resin melt foam R in the plate-like molded product M extruded from the die (18) is hardly defoamed, and the plate-like molded product M is in a low-density coarse state. I have. The plate-like molded product M is a series of rolling rolls (1
9, 20), and at this time, the plate-shaped product M is degassed, and the plate-shaped product M is adjusted to a predetermined specific gravity and thickness. And finally, it is pinched and cooled by a caterpillar press (21) as a pinching and cooling means, and cut into a predetermined size by a cutter (22) to be a product P.
【００１３】図３〜図５には本発明の木質成形体の他の
製造方法が示される。この製造方法ではまず前実施例と
同様に溶融供給器(11)から熱可塑性樹脂溶融物を発泡器
(16)に送り込み、ブロア(17)からの圧搾空気によって該
熱可塑性樹脂溶融物をホイップし発泡させる。該熱可塑
性樹脂溶融発泡物Ｒは図３に示すように上記発泡器(16)
から木質材料Ｔが充填されているミキシングタンク(23)
内に投入され、攪拌機(24)によって該木質材料Ｔと混合
される。上記木質材料Ｔと熱可塑性樹脂溶融発泡物Ｒと
の混合物Ａは、図４に示すように原料供給用コンベア(2
5)から散布コンベア(26)に供給され、該散布コンベア(2
6)上で散布量を調節用ブラッシングロール(27,28) で調
節されつゝ、散布用ブラッシングロール(29)にて型板搬
送用コンベア(30)上で搬送されている型板(31)上に散布
される。FIGS. 3 to 5 show another method of manufacturing the woody molded product of the present invention. In this manufacturing method, first, a thermoplastic resin melt is melted from a melt feeder (11) in the same manner as in the previous embodiment.
(16), and the thermoplastic resin melt is whipped and foamed by compressed air from a blower (17). As shown in FIG. 3, the thermoplastic resin molten foam R is mixed with the above foaming device (16).
Mixing tank filled with wood material T from (23)
And mixed with the wood material T by a stirrer (24). As shown in FIG. 4, the mixture A of the woody material T and the thermoplastic resin molten foam R is supplied to the raw material supply conveyor (2).
5) to the spraying conveyor (26).
6) The spraying amount is adjusted by the adjusting brushing rolls (27, 28), and the template (31) conveyed on the template conveying conveyor (30) by the spraying brushing rolls (29). Sprinkled on top.
【００１４】型板(31)上に散布された混合物Ａは上から
プレスコンベア(32)によってプレスされるが、該プレス
コンベア(32)は前端から厚み調製部(32A) 、加熱室(33)
内において熱間プレス部(32B) 、加熱室(33)外において
冷間プレス部(32C) に区画され、型板搬送用コンベア(3
0)もそれに対応して厚み調製部(30A) 、熱間プレス部(3
0B) 、冷間プレス部(30C) に区画されている。The mixture A sprayed on the template (31) is pressed from above by a press conveyor (32). The press conveyor (32) starts from the front end and has a thickness adjusting section (32A) and a heating chamber (33).
Inside, a hot press section (32B) and a cold press section (32C) outside the heating chamber (33)
0) also corresponds to the thickness adjustment section (30A), hot press section (3
0B), and is divided into a cold press section (30C).
【００１５】したがって混合物Ａは厚み調製部(30A,32
A) で厚みを次第に圧縮され、この間で混合物Ａは脱気
され、熱間プレス部(30B,32B) で熱間プレスされ、冷間
プレス部(30C,32C) で冷却固化され、板状成形物Ｍとな
る。該板状成形物Ｍは後段搬送コンベア(34)によって型
板(31)と共に搬送され、その間にカッター(35)によって
所定寸法に裁断される。以下に本発明の実施例を示す。Therefore, the mixture A is supplied to the thickness adjusting section (30A, 32).
A), the thickness of the mixture is gradually reduced, during which the mixture A is degassed, hot-pressed in the hot press sections (30B, 32B), cooled and solidified in the cold press sections (30C, 32C), and formed into a plate It becomes thing M. The plate-shaped molding M is conveyed together with the template (31) by the post-stage conveyor (34), and is cut to a predetermined size by the cutter (35) during the conveyance. Hereinafter, examples of the present invention will be described.
【００１６】〔実施例１〕図１および図２に示す装置に
よって下記の組成で木質成形体を製造した。 木片 *1 ５０重量部 再生ポリプロピレン ５０重量部 *1：幅１〜５mm、長さ５〜１５mm、厚み０．５〜２mm 上記ポリプロピレンは溶融供給器(11)内で２３０℃に加
熱され、発泡室(16)内でホイップされた上で木片Ｔに添
加混合された。圧延ロール(19,20) の圧力は６ＭＰa
で、冷却キャタピラープレス(21)は０．５ＭＰa の圧力
であった。得られた木質成形体の比重は０．６８ g／cm
3 、曲げ強度は３５Ｎ／mm2 、釘保持力（３φリングネ
イル使用）は８Ｎ／mm2 、２４時間吸水率は１８％、２
４時間吸水厚み膨潤率は３．１％であった。[Example 1] A wooden molded body having the following composition was produced by the apparatus shown in Figs. Wood piece * 1 50 parts by weight Recycled polypropylene 50 parts by weight * 1: Width 1 to 5 mm, length 5 to 15 mm, thickness 0.5 to 2 mm The above polypropylene is heated to 230 ° C. in the melt feeder (11) and foamed. After being whipped in (16), the mixture was added to the wood chip T and mixed. Rolling roll (19,20) pressure is 6MPa
The cooling caterpillar press (21) had a pressure of 0.5 MPa. The specific gravity of the obtained wooden molded body is 0.68 g / cm.
3. The bending strength is 35N / mm 2 , the nail holding force (using 3φ ring nail) is 8N / mm 2 , the water absorption rate for 24 hours is 18%,
The 4-hour water absorption thickness swelling ratio was 3.1%.
【００１７】〔実施例２〕図３〜５に示す装置を使用し
て実施例１と同様の組成で木質成形体を製造した。熱間
ロールプレス(32B) の圧力は６ＭＰa 、温度は２３０
℃、冷間ロールプレス(32C) の圧力は０．５ＭＰa に設
定した。得られた木質成形体の比重は０．６５ g／c
m3 、曲げ強度は３２Ｎ／mm2 、釘保持力は７．２Ｎ／m
m2 、２４時間吸水率は１９％、２４時間吸水厚み膨潤
率は３．２％であった。Example 2 Using the apparatus shown in FIGS. 3 to 5, a wooden molded body was manufactured with the same composition as in Example 1. The pressure of hot roll press (32B) is 6MPa, temperature is 230
C., the pressure of the cold roll press (32C) was set to 0.5 MPa. The specific gravity of the obtained wooden molded article is 0.65 g / c.
m 3 , bending strength 32 N / mm 2 , nail holding force 7.2 N / m
m 2 , the 24-hour water absorption was 19%, and the 24-hour water absorption thickness swelling was 3.2%.
【００１８】[0018]
【発明の効果】本発明では熱可塑性樹脂をバインダーと
して使用して効率良く木質成形体を製造することが出
来、熱可塑性樹脂は再生品を使用することが出来、樹脂
のリサイクル性も向上する。According to the present invention, a wood molded product can be efficiently produced by using a thermoplastic resin as a binder, a recycled product can be used as the thermoplastic resin, and the recyclability of the resin is improved.
図１および図２は本発明の一実施例を示すものである。 1 and 2 show an embodiment of the present invention.
【図１】製造装置の概略図FIG. 1 is a schematic diagram of a manufacturing apparatus.
【図２】ジャケット部分の側断面図図３〜図５は本発明
の他の実施例を示すものである。FIG. 2 is a side sectional view of a jacket portion. FIGS. 3 to 5 show another embodiment of the present invention.
【図３】ミキシングタンクの説明図FIG. 3 is an explanatory view of a mixing tank.
【図４】原料混合物散布状態説明図FIG. 4 is an explanatory diagram of a raw material mixture spraying state.
【図５】プレス成形状態説明図FIG. 5 is an explanatory diagram of a press molding state.
1 押出機（押出成形機） 2 シリンダ 3 ホッパー 4 スクリュー 6 ジャケット 6A 加熱手段 18 ダイ 19,20 圧延ロール 21 挟持冷却手段（キャタピラープレス） Ａ 混合物 Ｍ 板状成形物 Ｒ 熱可塑性樹脂溶融発泡物 Ｔ 木質材料（木片） 1 Extruder (extrusion molding machine) 2 Cylinder 3 Hopper 4 Screw 6 Jacket 6A Heating means 18 Die 19,20 Rolling roll 21 Nipping and cooling means (caterpillar press) A Mixture M Plate-shaped molded product R Thermoplastic resin molten foam T Woody Material (wood chips)
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｂ２９Ｋ 105:04 Ｂ２９Ｋ 105:26 105:26 Ｂ２９Ｌ 7:00 Ｂ２９Ｌ 7:00 31:10 31:10 Ｂ０９Ｂ 3/00 ＺＡＢ ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 7 Identification code FI Theme coat ゛ (Reference) B29K 105: 04 B29K 105: 26 105: 26 B29L 7:00 B29L 7:00 31:10 31:10 B09B 3 / 00 ZAB
Claims (8)
合して成形したことを特徴とする木質成形体1. A wooden molded article obtained by mixing and molding a wooden material and a thermoplastic resin melt foam.
を溶融させたところに圧搾空気を吹込んでホイップする
ことによって形成した請求項１に記載の木質成形体2. The wood molded article according to claim 1, wherein said molten thermoplastic resin foam is formed by blowing compressed air and whipping the molten thermoplastic resin.
廃材を使用している請求項１または２に記載の木質成形
体3. The wooden molded article according to claim 1, wherein said thermoplastic resin melt foam uses waste thermoplastic resin.
ているホッパーからシリンダ内に木質材料を投入し、該
シリンダに内設されているスクリューを回転させて該木
質材料をシリンダ先端側に送り、該シリンダの中間部に
おいて熱可塑性樹脂溶融発泡物を該木質材料に添加混合
し、該シリンダ先端のダイから該木質材料と熱可塑性樹
脂溶融発泡物との混合物を板状に押出し、圧延ロールで
圧延した後該板状成形物を挟持冷却手段によって冷却す
ることを特徴とする木質成形体の製造方法4. A wood material is introduced into a cylinder from a hopper attached to a cylinder root end of an extruder, and a screw provided in the cylinder is rotated to move the wood material to the cylinder tip side. In the middle part of the cylinder, a thermoplastic resin foam is added to and mixed with the wood material, and a mixture of the wood material and the thermoplastic resin foam is extruded into a plate shape from a die at the end of the cylinder. And cooling the plate-like molded product by sandwiching cooling means after rolling.
樹脂溶融発泡物添加混合部において、シリンダ外周には
ジャケットを周設し、該ジャケットには加熱手段を内挿
して該木質材料と該熱可塑性樹脂溶融発泡物とを加熱す
る請求項４に記載の木質成形体の製造方法5. In the extruder, a jacket is provided around the cylinder at the thermoplastic resin melt foam addition / mixing section in the middle of the cylinder of the extrusion molding machine, and heating means is inserted into the jacket to connect the wood material to the wood material. The method for producing a woody molded product according to claim 4, wherein the thermoplastic resin molten foam is heated.
溶融物がシリンダ内に添加される前に圧搾空気を吹込ん
でホイップすることによって形成される請求項４〜５に
記載の木質成形体の製造方法6. The woody molded product according to claim 4, wherein said thermoplastic resin melt foam is formed by blowing compressed air and whipping before the thermoplastic resin melt is added into the cylinder. Manufacturing method
合物を型板上に散布してマットをフォーミングし、該マ
ットをプレスして成形することを特徴とする請求項１に
記載の木質成形体の製造方法7. The woody material according to claim 1, wherein a mixture of the woody material and the thermoplastic resin foam is sprayed on a template to form a mat, and the mat is pressed and formed. Manufacturing method of molded body
板上にフォーミングされたマットは熱間ロールプレスさ
れ、その後冷間ロールプレスされる請求項７に記載の木
質成形体の製造方法8. The method of claim 7, wherein the template moves on a roll conveyor, and the mat formed on the template is hot roll-pressed and then cold roll-pressed. Method
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000230315A JP3974316B2 (en) | 2000-07-31 | 2000-07-31 | Method for producing a wooden molded body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000230315A JP3974316B2 (en) | 2000-07-31 | 2000-07-31 | Method for producing a wooden molded body |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002036335A true JP2002036335A (en) | 2002-02-05 |
| JP3974316B2 JP3974316B2 (en) | 2007-09-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000230315A Expired - Fee Related JP3974316B2 (en) | 2000-07-31 | 2000-07-31 | Method for producing a wooden molded body |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005238554A (en) * | 2004-02-25 | 2005-09-08 | Misawa Homes Co Ltd | Extrusion foaming method and extrusion foaming machine |
| JP2022550601A (en) * | 2019-10-01 | 2022-12-02 | ウォルター フリスター，カルロス | Process for manufacturing thermoplastic sheet |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH079448A (en) * | 1993-06-24 | 1995-01-13 | Nippon Steel Corp | Extruder structure in waste plastic recycling facility |
| JPH08142143A (en) * | 1994-11-15 | 1996-06-04 | Nok Corp | Extrusion device of molding machine |
| JPH0960190A (en) * | 1995-08-29 | 1997-03-04 | Nichiha Corp | Building board and manufacture of building board |
| JPH10305470A (en) * | 1997-05-02 | 1998-11-17 | Misawa Homes Co Ltd | Woody product and its manufacture |
-
2000
- 2000-07-31 JP JP2000230315A patent/JP3974316B2/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH079448A (en) * | 1993-06-24 | 1995-01-13 | Nippon Steel Corp | Extruder structure in waste plastic recycling facility |
| JPH08142143A (en) * | 1994-11-15 | 1996-06-04 | Nok Corp | Extrusion device of molding machine |
| JPH0960190A (en) * | 1995-08-29 | 1997-03-04 | Nichiha Corp | Building board and manufacture of building board |
| JPH10305470A (en) * | 1997-05-02 | 1998-11-17 | Misawa Homes Co Ltd | Woody product and its manufacture |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005238554A (en) * | 2004-02-25 | 2005-09-08 | Misawa Homes Co Ltd | Extrusion foaming method and extrusion foaming machine |
| JP2022550601A (en) * | 2019-10-01 | 2022-12-02 | ウォルター フリスター，カルロス | Process for manufacturing thermoplastic sheet |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3974316B2 (en) | 2007-09-12 |
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