JPH0149100B2 - - Google Patents
Info
- Publication number
- JPH0149100B2 JPH0149100B2 JP59152158A JP15215884A JPH0149100B2 JP H0149100 B2 JPH0149100 B2 JP H0149100B2 JP 59152158 A JP59152158 A JP 59152158A JP 15215884 A JP15215884 A JP 15215884A JP H0149100 B2 JPH0149100 B2 JP H0149100B2
- Authority
- JP
- Japan
- Prior art keywords
- molded product
- molding
- synthetic resin
- polyethylene
- melting
- 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
Links
- 238000000465 moulding Methods 0.000 claims description 24
- 229920003002 synthetic resin Polymers 0.000 claims description 20
- 239000000057 synthetic resin Substances 0.000 claims description 20
- 238000001125 extrusion Methods 0.000 claims description 15
- 238000002844 melting Methods 0.000 claims description 13
- 230000008018 melting Effects 0.000 claims description 13
- 238000004519 manufacturing process Methods 0.000 claims description 10
- 239000002994 raw material Substances 0.000 claims description 10
- 238000002156 mixing Methods 0.000 claims description 5
- 239000011342 resin composition Substances 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims description 2
- 229920000642 polymer Polymers 0.000 claims description 2
- 239000012778 molding material Substances 0.000 claims 1
- 238000003756 stirring Methods 0.000 claims 1
- 239000004698 Polyethylene Substances 0.000 description 16
- -1 polyethylene Polymers 0.000 description 16
- 229920000573 polyethylene Polymers 0.000 description 16
- 229920005989 resin Polymers 0.000 description 14
- 239000011347 resin Substances 0.000 description 14
- 229920003020 cross-linked polyethylene Polymers 0.000 description 13
- 239000004703 cross-linked polyethylene Substances 0.000 description 13
- 239000000463 material Substances 0.000 description 10
- 238000004049 embossing Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 9
- 239000002245 particle Substances 0.000 description 4
- 238000004891 communication Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 235000012438 extruded product Nutrition 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/022—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the choice of material
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Description
【発明の詳細な説明】
（産業上の利用分野）
表面に滑り止め、もしくは他の物質との付着性
を良好ならしめる目的をもつて、均一な凹凸状の
エンボス面が成型された合成樹脂押出成型品の製
造方法に関する。より詳細には、高分子化合物か
ら成る粒状の合成樹脂と、架橋済樹脂組成物を粉
砕して得た粒状の合成樹脂を成型原料として使用
し、これら合成樹脂間の溶融温度差による粘性度
の違いを利用してエンボスを有する合成樹脂押出
成型品を製造する方法に関する。Detailed Description of the Invention (Industrial Field of Application) Synthetic resin extrusion on which a uniformly uneven embossed surface is molded for the purpose of preventing slippage or improving adhesion to other substances. This invention relates to a method for manufacturing molded products. More specifically, a granular synthetic resin made of a polymer compound and a granular synthetic resin obtained by pulverizing a crosslinked resin composition are used as molding raw materials, and the viscosity is determined by the difference in melting temperature between these synthetic resins. The present invention relates to a method of manufacturing a synthetic resin extrusion molded product having embossing by utilizing the difference.
（従来の技術）
例えば滑り止め、もしくは他の物質との付着性
をよくすることを目的として、合成樹脂押出成型
品の表面にエンボスを形成する方法としては、従
来、押出成型後にエンボスロール等を用いてエン
ボス加工するものが良く知られていた。然し乍
ら、この種のエンボス加工法は、加工の初期段階
に於いて押出成型品に対し引張り力が働くため、
しばしば素材に割れが生じたり、又素材に加えら
れる圧力により素材の肉厚に変化をきたす等の欠
点があつた。(Prior art) Conventionally, as a method of forming embossing on the surface of a synthetic resin extrusion molded product for the purpose of preventing slippage or improving adhesion with other substances, an embossing roll or the like is conventionally used after extrusion molding. It was well known that embossing was carried out using this method. However, in this type of embossing method, tensile force is applied to the extruded product at the initial stage of processing, so
There were disadvantages such as cracks often occurring in the material and changes in the thickness of the material due to the pressure applied to the material.
（発明の目的）
本発明の主目的は、上記の事情に鑑み、エンボ
スロール等のエンボス加工装置を用いることな
く、合成樹脂を押し出し成型すると同時にこの押
出成型品の表面にエンボスを有する合成樹脂押出
成型品の製造方法を提供することにある。(Object of the Invention) In view of the above circumstances, the main object of the present invention is to extrude a synthetic resin without using an embossing device such as an embossing roll, and at the same time extrude a synthetic resin with an emboss on the surface of the extruded product. The object of the present invention is to provide a method for manufacturing molded products.
本発明の別の目的は、エンボス表面を有する合
成樹脂の押出成型品を製造するにあたり、素材に
割れが生じたり、又素材の肉厚に変化をきたすこ
とのないエンボス表面を有する合成樹脂押出成型
品の製造方法を提供することにある。 Another object of the present invention is to produce a synthetic resin extrusion molded product with an embossed surface that does not cause cracks in the material or change in the thickness of the material. The goal is to provide a method for manufacturing products.
（実施例）
本発明に係るエンボス表面を有する合成樹脂押
出成型品の製造方法につき、この方法を実施する
押出成型装置を参照しながら以下に説明する。(Example) A method for manufacturing a synthetic resin extrusion molded product having an embossed surface according to the present invention will be described below with reference to an extrusion molding apparatus that carries out this method.
第１図において、符合１は合成樹脂押出成型品
の成型原料を溶融するための溶融装置であり、こ
の装置１の上部に設けられたホツパ２には、例え
ば粒状のポリエチレンＡと架橋構造を有する同じ
く粒状のポリエチレンＢとから構成される成型原
料が投入される。 In FIG. 1, reference numeral 1 is a melting device for melting a molding raw material for a synthetic resin extrusion molded product, and a hopper 2 provided at the top of this device 1 has a crosslinked structure with, for example, granular polyethylene A. A molding raw material composed of granular polyethylene B is also introduced.
本実施例では成型原料の混合重量比率を、ポリ
エチレンA60％に対し、架橋ポリエチレンＢを40
％に設定している。ポリエチレンＡに対する架橋
ポリエチレンＢの混合比率が小さいと、成型品上
に形成されるエンボス凹凸面の粗さが細かくな
り、反対に架橋ポリエチレンＢの混合比率が多い
とエンボス凹凸面の粗さが増大する。ただしポリ
エチレンA30％、架橋ポリエチレンB70％のよう
に、架橋ポリエチレンＢの混合比率が大きく上廻
ると、成型される合成樹脂が引張りに対して脆弱
なものとなり、製品として適さなくなる。 In this example, the mixing weight ratio of the molding raw materials was 60% polyethylene A and 40% crosslinked polyethylene B.
It is set to %. When the mixing ratio of cross-linked polyethylene B to polyethylene A is small, the roughness of the embossed uneven surface formed on the molded product becomes fine, and on the other hand, when the mixing ratio of cross-linked polyethylene B is high, the roughness of the embossed uneven surface increases. . However, if the mixing ratio of crosslinked polyethylene B is greatly exceeded, such as 30% polyethylene A and 70% crosslinked polyethylene B, the synthetic resin to be molded becomes weak against tension, making it unsuitable as a product.
上記の架橋ポリエチレンＢとしては、一度架橋
済樹脂組成物として成型された成型品を機械的に
紛砕して得た顆粒状粒子が用いられる。この架橋
済樹脂組成物成型品としては、各種成型品の廃
材、例えば電線被覆材の廃材を利用するなどの方
法により比較的安価に入手することができる。ま
た、本実施例において混合されるポリエチレンＡ
と前記架橋ポリエチレンＢは、夫々同じ大きさ程
度のメツシユをもつ顆粒状粒子に揃えた形で用い
ることが望ましい。 As the above-mentioned crosslinked polyethylene B, granular particles obtained by mechanically crushing a molded product once molded as a crosslinked resin composition are used. This crosslinked resin composition molded product can be obtained relatively inexpensively by using waste materials from various molded products, for example, waste materials from electric wire coating materials. In addition, polyethylene A mixed in this example
It is desirable to use the crosslinked polyethylene B and the crosslinked polyethylene B in the form of granular particles having meshes of approximately the same size.
ホツパ２内に投入されたポリエチレンＡ及び架
橋ポリエチレンＢは、このホツパ２の投入口と連
結するシリンダ３内に取り付けられたスクリユ４
の回転により順次撹拌混合されながら移送され、
溶融装置１の出口端部に設けられた加熱器５で加
熱されて溶融する。本実施例において使用するポ
リエチレンＡの溶融点は約120℃、成型原料を溶
融する該加熱器の加熱温度は、190℃以上に設定
する。 The polyethylene A and crosslinked polyethylene B charged into the hopper 2 are transferred to a screw 4 attached to a cylinder 3 connected to the input port of the hopper 2.
are transferred while being sequentially stirred and mixed by the rotation of the
The material is heated and melted by a heater 5 provided at the outlet end of the melting device 1. The melting point of polyethylene A used in this example is about 120°C, and the heating temperature of the heater for melting the molding raw material is set to 190°C or higher.
溶融装置１内においてポリエチレンＡと架橋ポ
リエチレンＢとが加熱されると、ポリエチレンＡ
がまず溶融して、未溶融の軟化した架橋ポリエチ
レンＢの粒子表面を包み込み、架橋ポリエチレン
Ｂが溶融ポリエチレンＡの樹脂中に粒状に混在す
る形となる。このようにして両樹脂素材はスクリ
ユウ４により錬合わされながら連通管６を介して
溶融装置１と連通した成型ダイ７内に供給され、
約150℃に保持された該成型ダイ７内において所
定の形状をもつ成型品に成型される。 When polyethylene A and crosslinked polyethylene B are heated in the melting device 1, polyethylene A
first melts and wraps around the surface of the particles of the unmelted, softened crosslinked polyethylene B, so that the crosslinked polyethylene B is mixed in the resin of the molten polyethylene A in the form of particles. In this way, both resin materials are kneaded together by the screw 4 and fed into the molding die 7 which communicates with the melting device 1 via the communication pipe 6.
The molded product is molded into a predetermined shape in the molding die 7 maintained at about 150°C.
次に、前記成型ダイ７内において所定形状に成
型された溶融状態にある前記樹脂は、該成型ダイ
７から押出されて、後方の冷却ダイ８内に送られ
る。この成型ダイ７の出口から押出される溶融樹
脂は、前記のように完全に溶融して流れやすい状
態のポリエチレンＡの樹脂と、加熱されて軟化し
たが完全に溶融せずに流れにくい状態の架橋ポリ
エチレンＢの樹脂が混合されている。一方、この
溶融樹脂が成型ダイ７の出口から外気中に押出さ
れると、外気中では溶融樹脂が成型ダイ７内にお
けるような平均的な押出し圧力を受けにくい状態
となる。そのため成型ダイ７の出口から押出され
る前記成型溶融樹脂の断面のうち、中央部分の樹
脂は成型ダイ７内からの押出し力を受けて容易に
流出しやすいが、前記出口の内周面に接した外表
面部分の樹脂は、該部分に混在する流れにくい架
橋ポリエチレンＢの樹脂が出口内周面と接触しな
がら押出される際の摩擦抵抗を受けて流れにくい
状態となり、内部と外表面の流動性の違いによ
り、外表面樹脂が出口からスムーズに押出されな
いことによる、ザラついた粗面つまりエンボス面
が成型品外表面に形成されることとなる。 Next, the molten resin molded into a predetermined shape in the molding die 7 is extruded from the molding die 7 and sent into the cooling die 8 at the rear. The molten resin extruded from the exit of the molding die 7 is composed of the polyethylene A resin which is completely melted and easy to flow as described above, and the cross-linked resin which is softened by heating but is not completely melted and does not flow easily. Polyethylene B resin is mixed. On the other hand, when this molten resin is extruded from the outlet of the molding die 7 into the outside air, the molten resin in the outside air is not easily subjected to the average extrusion pressure as in the molding die 7. Therefore, of the cross section of the molded molten resin extruded from the outlet of the molding die 7, the resin in the center part is likely to receive the extrusion force from inside the molding die 7 and flow out easily, but it comes into contact with the inner circumferential surface of the outlet. The resin on the outer surface part becomes difficult to flow due to the frictional resistance when the hard-to-flow crosslinked polyethylene B resin mixed in this part is extruded while contacting the inner circumferential surface of the outlet, and the flow between the inner and outer surfaces becomes difficult. Due to the difference in properties, the outer surface resin is not extruded smoothly from the outlet, resulting in a rough, rough or embossed surface being formed on the outer surface of the molded product.
冷却ダイ８は、このようにしてその表面にエン
ボスが形成された成型品を表面から除々に冷却し
て、エンボス及び成型品本体の形状を安定させる
働きをする。 The cooling die 8 functions to gradually cool the molded product having the emboss formed on its surface from the surface, thereby stabilizing the shape of the embossment and the main body of the molded product.
上記実施例では、ポリエチレン及びこのポリエ
チレンを架橋した、橋架け構造を有するポリエチ
レンを成型原料として使用したが、ポリプロピレ
ン等、他の高分子化合物及びこの高分子化合物を
橋架けした構造のものを成型原料として使用しう
ることは勿論である。 In the above examples, polyethylene and polyethylene having a cross-linked structure obtained by cross-linking this polyethylene were used as molding raw materials. Of course, it can be used as
（発明の効果）
以上述べた如く、本発明に係るエンボス表面を
有する合成樹脂押出成型品の製造方法によれば、
所定形状に整合された溶融状態の成型原料を成型
ダイ外に押し出して成型圧力から開放した際に、
合成樹脂間の溶融温度差による粘性差を利用して
エンボスを成型品の表面に形成することができる
のでエンボスロール等のエンボス加工装置を用い
る必要がなく、製造工程が短縮されると共に、極
めて薄い合成樹脂押出成型品の製造に際しても、
素材に割れが生じたり、又素材の肉厚に変化をき
たすことがない等種々の効果が得られる。(Effects of the Invention) As described above, according to the method for manufacturing a synthetic resin extrusion molded product having an embossed surface according to the present invention,
When the molten molding raw material that has been adjusted to a predetermined shape is pushed out of the molding die and released from the molding pressure,
Emboss can be formed on the surface of the molded product using the viscosity difference due to the melting temperature difference between synthetic resins, so there is no need to use embossing equipment such as an embossing roll, which shortens the manufacturing process and makes it extremely thin. When manufacturing synthetic resin extrusion molded products,
Various effects can be obtained, such as preventing the material from cracking or causing changes in the thickness of the material.
この発明を添付図面に示す実施態様について説
明したが、この発明は、特に明記した部分を除い
ては、その詳細な説明の記載をもつて制約しよう
とするのではなく、特許請求の範囲の記載におい
て広く構成しようとするものである。 Although this invention has been described with reference to the embodiments shown in the accompanying drawings, this invention is not intended to be limited by the detailed description thereof, except as specifically stated, but by the claims. It is intended to be broadly structured in terms of
第１図は、本発明に係るエンボス表面を有する
合成樹脂押出成型品の製造方法を実施する押出成
型装置の概略断面説明図。
１：溶融装置、２：ホツパ、３：シリンダ、
４：スクリユ、５：加熱器、６：連通管。
FIG. 1 is a schematic cross-sectional explanatory diagram of an extrusion molding apparatus for carrying out the method of manufacturing a synthetic resin extrusion molded product having an embossed surface according to the present invention. 1: Melting device, 2: hopper, 3: cylinder,
4: Screw, 5: Heater, 6: Communication pipe.
Claims (1)
橋済樹脂組成物を紛砕して得た粒状の合成樹脂と
から構成される成型原料を、溶融装置内で撹拌混
合すると共に、溶融するに必要な所定の温度で加
熱する段階と；溶融状態の前記成型原料を、成型
ダイ内に供給して所定の形状に整合する段階と；
このようにして整合された成型原料を、成型ダイ
外に押し出して成型圧力から開放させた際に、前
記両合成樹脂間の溶融温度差に基く流動粘性の差
異を利用して、成型品の表面にエンボスを形成す
る段階と；この成型品を冷却ダイに供給して、エ
ンボス及び成型品本体の形状を安定させる段階と
からなることを特徴とするエンボス表面を有する
合成樹脂押出成型品の製造法。1 Necessary for stirring and mixing in a melting device and melting a molding raw material consisting of a granular synthetic resin made of a polymer compound and a granular synthetic resin obtained by crushing a crosslinked resin composition. a step of heating the molding material at a predetermined temperature; a step of supplying the molding raw material in a molten state into a molding die and matching it into a predetermined shape;
When the molding raw materials aligned in this way are pushed out of the molding die and released from the molding pressure, the surface of the molded product is created by utilizing the difference in flow viscosity based on the difference in melting temperature between the two synthetic resins. A method for producing a synthetic resin extrusion molded product having an embossed surface, comprising the steps of: forming an emboss on the molded product; and supplying the molded product to a cooling die to stabilize the embossment and the shape of the molded product body. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15215884A JPS6131226A (en) | 1984-07-24 | 1984-07-24 | Manufacture of extruded synthetic resin product with embossed surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15215884A JPS6131226A (en) | 1984-07-24 | 1984-07-24 | Manufacture of extruded synthetic resin product with embossed surface |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6131226A JPS6131226A (en) | 1986-02-13 |
| JPH0149100B2 true JPH0149100B2 (en) | 1989-10-23 |
Family
ID=15534287
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15215884A Granted JPS6131226A (en) | 1984-07-24 | 1984-07-24 | Manufacture of extruded synthetic resin product with embossed surface |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6131226A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01314766A (en) * | 1988-06-07 | 1989-12-19 | Hitachi Cable Ltd | Braiding machine |
| JP2571344Y2 (en) * | 1997-03-04 | 1998-05-18 | 村田機械株式会社 | Braider |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4826838A (en) * | 1971-08-12 | 1973-04-09 |
-
1984
- 1984-07-24 JP JP15215884A patent/JPS6131226A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4826838A (en) * | 1971-08-12 | 1973-04-09 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6131226A (en) | 1986-02-13 |
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