JPH075751B2 - Method for producing composite plate of cellulose fiber and polyolefin resin - Google Patents
Method for producing composite plate of cellulose fiber and polyolefin resinInfo
- Publication number
- JPH075751B2 JPH075751B2 JP61279719A JP27971986A JPH075751B2 JP H075751 B2 JPH075751 B2 JP H075751B2 JP 61279719 A JP61279719 A JP 61279719A JP 27971986 A JP27971986 A JP 27971986A JP H075751 B2 JPH075751 B2 JP H075751B2
- Authority
- JP
- Japan
- Prior art keywords
- polyolefin resin
- composite plate
- pulp
- cellulose fiber
- paper
- 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.)
- Expired - Lifetime
Links
Landscapes
- Reinforced Plastic Materials (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Moulding By Coating Moulds (AREA)
- Panels For Use In Building Construction (AREA)
Description
【発明の詳細な説明】 《産業上の利用分野》 本発明は、セルロース繊維、例えば紙もしくはパルプと
ポリオレフィン樹脂とによる熱圧変形が可能な複合板の
製造方法に関する。TECHNICAL FIELD The present invention relates to a method for producing a composite plate capable of being hot-press deformed by a cellulose resin such as paper or pulp and a polyolefin resin.
《発明の背景》 木材資源の有効活用を目的として、木粉をポリオレフィ
ンに混練することが検討され、塗装性などに優れている
ことから表面改質の用途に一部は実用化されている。<< Background of the Invention >> Kneading wood powder with polyolefin has been studied for the purpose of effective utilization of wood resources, and some of them have been put to practical use for surface modification because of their excellent paintability.
しかし、この木粉入りのポリオレフィンは、ポリオレフ
ィン単体による成形品に比較して物性が低下し、またコ
ストも高い。However, this wood powder-containing polyolefin has lower physical properties and higher cost than a molded product made of a single polyolefin.
また、木材そのものを化学修飾して内部可塑化し、熱成
形性を付与することも可能であるが、化学修飾はコスト
高となって、実際に工業化するには問題のある方法であ
る。It is also possible to chemically modify the wood itself to plasticize it internally to give it thermoformability, but the chemical modification is costly and is a problematic method for practical industrialization.
これらの点から木材を化学修飾することなしに、リファ
イナー・グランド・パルプとし、これと変性ポリプロピ
レンとを混練する方法が提案されている。（第36回 日
本木材学会 研究発表会 1986 岸、山野井、白石、横
田） しかしながら、木粉またはパルプのような繊維材料は嵩
高く、特殊な混合装置や混練装置を必要とし、工業化の
点で問題がある。From these points, a method has been proposed in which the refiner ground pulp is kneaded with the modified polypropylene without chemically modifying the wood. (The 36th Annual Meeting of the Wood Research Society of Japan 1986 Kishi, Yamanoi, Shiraishi, Yokota) However, fiber materials such as wood flour or pulp are bulky and require special mixing and kneading equipment, which poses a problem in terms of industrialization. There is.
本発明者は上述の問題に鑑み、上記の基礎的考案、すな
わち木材を出発原料とするセルロース繊維、例えば紙，
パルプとポリオレフィン系樹脂との組合せを、工業的に
実施できる方法を鋭意検討し、本発明に至った。In view of the above problems, the present inventor has made the above basic idea, that is, a cellulose fiber starting from wood, such as paper,
The present invention has been accomplished by intensively studying a method capable of industrially implementing the combination of pulp and a polyolefin resin.
《発明の構成》 本発明の構成は特許請求の範囲に記載のとおりである
が、これを要するに、フェノール系樹脂積層板などの基
材として使用される紙あるいはパルプのシート状物に、
セルローズあるいはリグニンのOH基と架橋可能な変性ポ
リオレフィン樹脂として無水マイレン酸またはイタコン
酸で変性したポリオレフィン樹脂を溶融状で接触させ
て、加圧することによって含浸させることを特徴とす
る。溶融状の変性樹脂はスリット状のダイから供給し、
この溶融物を挟むように上下に紙もしくはシート状のパ
ルプを供給し、対ロール間で溶融状の樹脂を含浸する
か、あるいはフラット状のスチールコンベヤーないしキ
ャタピラー状の圧接板などに加圧含浸することが連続的
に生産する上では望ましい。<< Structure of the Invention >> The structure of the present invention is as described in the claims, but in essence, a sheet-shaped material of paper or pulp used as a base material such as a phenolic resin laminate is required,
As a modified polyolefin resin capable of crosslinking with OH groups of cellulose or lignin, a polyolefin resin modified with maleic anhydride or itaconic acid is brought into contact in a molten state and impregnated by pressurizing. The molten modified resin is supplied from a slit die,
Paper or sheet-like pulp is supplied up and down so as to sandwich the melt, and a molten resin is impregnated between the pair of rolls, or a flat steel conveyor or a caterpillar pressure contact plate is pressure-impregnated. Is desirable for continuous production.
また、加圧含浸は小規模的に行なう場合は、紙もしくは
パルプのシート状物の間に、無水マイレン酸もしくはイ
タコン酸で変性したポリオレフィン樹脂のシート状（フ
ィルム状）のものを交互に重ね合せて加圧プレス間に供
給し、加熱加圧することによって行なうこともできる。When pressure impregnation is performed on a small scale, sheets of paper or pulp are laminated alternately with sheets of polyolefin resin modified with maleic anhydride or itaconic acid (film). It can also be carried out by supplying it between pressure presses and applying heat and pressure.
ポリオレフィン樹脂としてはポリプロピレン，ポリエチ
レンが一般的であるが、これらの各種共重合体などであ
ってもよい。Polypropylene and polyethylene are generally used as the polyolefin resin, but various copolymers of these may be used.
また、紙またはパルプのシート状物は前記の紙あるいは
各種のパルプであって繊維間が比較的粗であってシート
状の物が望ましく、パルプとしては例えばリファイナー
・グランド・パルプが安価であり、経済性の点から望ま
しい。Further, the sheet-like material of paper or pulp is the above-mentioned paper or various pulp, and it is desirable that the sheet-like material is relatively coarse between fibers, and as the pulp, for example, refiner ground pulp is inexpensive, It is desirable from the economical point of view.
《実施例》 フェノール含浸用の厚み0.27mm、目付137g/m2の紙８枚
と厚み0.15mmの無水マイレン酸変性ポリプロピレンフィ
ルム16枚とを交互に重ね合せ、平板プレス間に挟んで、
180℃で70kg/cm2の圧力で30分間加熱し、これを冷却し
て複合板を得た。<Example> Phenol-impregnated thickness 0.27 mm, 8 sheets with a basis weight of 137 g / m 2 and 16 sheets of 0.15 mm thick maleic anhydride-modified polypropylene film were alternately laminated, sandwiched between flat plate presses,
It was heated at 180 ° C. under a pressure of 70 kg / cm 2 for 30 minutes and then cooled to obtain a composite plate.
このようにして得られた複合板は厚み1.65mm、目付1890
g/m2、ポプロピレン樹脂含有量42重量％、紙含有量58重
量％で後述する測定方法による曲げ強さが1076kg/cm2、
曲げ弾性率50800kg/cm2、含水率0.33％であった。The composite plate thus obtained has a thickness of 1.65 mm and a basis weight of 1890.
g / m 2 , content of polypropylene resin of 42% by weight, content of paper of 58% by weight and bending strength of 1076 kg / cm 2 by the measuring method described later,
The flexural modulus was 50800 kg / cm 2 , and the water content was 0.33%.
この複合板は、深さ30mmの角底容器状に180℃で加熱成
形が可能であった。This composite plate was heat-moldable at 180 ° C. into a rectangular bottom container having a depth of 30 mm.
なお、前記の変性ポリプロピレンフィルムの枚数を変更
することによって、パルプ繊維および変性ポリオレフィ
ン樹脂の含有率を範囲28％〜45％まで変更させたが、曲
げ強さは850〜1100kg/cm2、曲げ弾性率55000〜68000kg/
cm2の物性を示し、従来の繊維板の約３倍の強度を有し
ている。The content of pulp fiber and modified polyolefin resin was changed to a range of 28% to 45% by changing the number of the modified polypropylene film, but the bending strength was 850 to 1100 kg / cm 2 , and the bending elasticity was Rate 55000-68000kg /
It has a physical property of cm 2 , and has a strength three times that of a conventional fiberboard.
曲げ試験は、幅25mm、長さ50mmのサンプルを、支点間25
mm、荷重速度1mm/minの条件で３点曲げを行なって求め
た。For the bending test, a sample with a width of 25 mm and a length of 50 mm was used with 25
mm, and the load speed was 1 mm / min.
なお、実施例およびこれとの比較として、未変性のポリ
プロピレン樹脂による複合板（参考例１）、未変性の高
圧法ポリエチレン樹脂による複合板（参考例２）、補強
用のセルロース繊維を含まないポリプロピレン樹脂のみ
による板状材（参考例３）の物性をまとめて第１表に示
す。In addition, as an example and a comparison therewith, a composite plate made of an unmodified polypropylene resin (Reference Example 1), a composite plate made of an unmodified high-pressure polyethylene resin (Reference Example 2), a polypropylene containing no reinforcing cellulose fiber Table 1 collectively shows the physical properties of the plate-shaped material (Reference Example 3) made of only the resin.
《作用効果》 本発明の製造方法では、比較的粗なセルロース繊維密度
の紙もしくはパルプのシート状物に溶融状の変性ポリオ
レフィン樹脂を加圧含浸しているので、得られる複合板
はセルロース繊維あるいはリグニンのOH基と変性ポリオ
レフィン樹脂とが架橋結合して繊維状物による補強効果
が発現される。 <Operation and effect> In the production method of the present invention, since a sheet-shaped material of paper or pulp having a relatively coarse cellulose fiber density is pressure-impregnated with the molten modified polyolefin resin, the obtained composite plate is composed of cellulose fibers or The OH group of lignin and the modified polyolefin resin are cross-linked with each other, and the reinforcing effect of the fibrous material is exhibited.
また、本発明方法は工業的に実用可能な方法であって、
木材資源としての紙パルプの有効活用がはかられるとと
もに、得られる複合板は加熱成形が可能なので、従来繊
維板が使用されていた分野、例えば自動車ドアの中芯、
トランクルームの仕切り、タイヤカバーなどに、比較的
容易に成形できるなど、新規にして有用な複合板の製造
方法である。Further, the method of the present invention is an industrially practical method,
With effective utilization of paper pulp as a wood resource, the resulting composite board can be heat-molded, so in fields where fibreboard was conventionally used, such as the core of an automobile door,
This is a novel and useful method for producing a composite plate, which can be molded comparatively easily on a partition of a luggage compartment or a tire cover.
Claims (2)
無水マイレン酸もしくはイタコン酸変性のポリオレフィ
ン樹脂を加圧含浸することを特徴とするセルロース繊維
とポリオレフィン樹脂による複合板の製造方法。1. A method for producing a composite plate of a cellulose fiber and a polyolefin resin, which comprises impregnating a sheet of paper or pulp with a molten polyolefin resin modified with maleic anhydride or itaconic acid under pressure.
のシート状物の間に無水マイレン酸もしくはイタコン酸
変性のポリオレフィン樹脂製シートを交互に重ねた後、
これらを加熱して、該ポリオレフィン樹脂製シートを溶
融させつつ加圧して行なうことを特徴とする特許請求の
範囲第１項記載のセルロース繊維とポリオレフィン樹脂
による複合板の製造方法。2. The pressure impregnation is carried out by alternately stacking sheets of a polyolefin resin modified with maleic anhydride or itaconic acid between a plurality of sheet-like materials of paper or pulp,
The method for producing a composite plate of a cellulose fiber and a polyolefin resin according to claim 1, characterized in that these are heated and pressed while melting the polyolefin resin sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61279719A JPH075751B2 (en) | 1986-11-26 | 1986-11-26 | Method for producing composite plate of cellulose fiber and polyolefin resin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61279719A JPH075751B2 (en) | 1986-11-26 | 1986-11-26 | Method for producing composite plate of cellulose fiber and polyolefin resin |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63132943A JPS63132943A (en) | 1988-06-04 |
| JPH075751B2 true JPH075751B2 (en) | 1995-01-25 |
Family
ID=17614923
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61279719A Expired - Lifetime JPH075751B2 (en) | 1986-11-26 | 1986-11-26 | Method for producing composite plate of cellulose fiber and polyolefin resin |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH075751B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1642710B1 (en) * | 2004-09-29 | 2008-07-02 | Sami Dr.-Ing. Ezzat | Method of mixing fibrous network of natural polymer and a synthetic polymer as matrix |
-
1986
- 1986-11-26 JP JP61279719A patent/JPH075751B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63132943A (en) | 1988-06-04 |
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