JPH02133320U - - Google Patents
Info
- Publication number
- JPH02133320U JPH02133320U JP1989041263U JP4126389U JPH02133320U JP H02133320 U JPH02133320 U JP H02133320U JP 1989041263 U JP1989041263 U JP 1989041263U JP 4126389 U JP4126389 U JP 4126389U JP H02133320 U JPH02133320 U JP H02133320U
- Authority
- JP
- Japan
- Prior art keywords
- screw
- cylinder
- layer
- supplied
- input port
- 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.)
- Pending
Links
- 238000001125 extrusion Methods 0.000 claims description 4
- 230000000903 blocking effect Effects 0.000 description 2
- 238000005192 partition Methods 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
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
- B29C48/445—Coaxially arranged screws, i.e. one within the other
-
- 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
- B29C48/12—Articles with an irregular circumference when viewed in cross-section, e.g. window profiles
-
- 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
- B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
- B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
- B29C48/21—Articles comprising two or more components, e.g. co-extruded layers the components being layers the layers being joined at their surfaces
-
- 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
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/30—Extrusion nozzles or dies
- B29C48/305—Extrusion nozzles or dies having a wide opening, e.g. for forming sheets
- B29C48/307—Extrusion nozzles or dies having a wide opening, e.g. for forming sheets specially adapted for bringing together components, e.g. melts within the die
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Description
第１〜３図は本考案を具体化した一実施例を示
し、第１図は二層押出成形機の断面図、第２図は
二層成形品の断面図、第３図は外側スクリユーの
部分斜視図、第４図は従来の二層押出成形機の断
面図である。
３……シリンダ、４，５……投入口、１０……
外側スクリユー、１１……外側通路、１５……連
通部の一部を構成する透孔、１６……阻止部の一
部を構成する内側シリンダ、１８……連通部の一
部を構成する連通孔、１９……内側スクリユー、
２６……ダイス、２７……内側通路、３０……阻
止部の一部を構成する隔壁、Ａ……内層材料、Ｂ
……外層材料。
Figures 1 to 3 show an embodiment embodying the present invention. Figure 1 is a sectional view of a two-layer extrusion molding machine, Figure 2 is a sectional view of a two-layer molded product, and Figure 3 is a cross-sectional view of an outer screw. The partial perspective view, FIG. 4, is a sectional view of a conventional two-layer extrusion molding machine. 3...Cylinder, 4,5...Inlet, 10...
Outer screw, 11...Outer passage, 15...Through hole forming a part of the communicating part, 16...Inner cylinder forming a part of the blocking part, 18...Communicating hole forming a part of the communicating part , 19...inner screw,
26... Dice, 27... Inner passage, 30... Partition wall forming part of the blocking part, A... Inner layer material, B
... Outer layer material.
Claims (1)
に配設し、その外側スクリユー１０内には内側ス
クリユー１９を回転可能に配設して、シリンダ３
内壁と外側スクリユー１０との間の外側通路１１
に供給された外層材料Ｂを同シリンダ３前端のダ
イス２６に押出すとともに、外側スクリユー１０
内壁と内側スクリユー１９との間の内側通路２７
に供給された内層材料Ａを前記ダイス２６に押出
して二層成形品Ｐを形成する二層押出成形機にお
いて、 前記内外両通路２７，１１間には内外両スクリ
ユー１９，１０から前方へ突出して、ダイス２６
に押出される内外両層材料Ａ，Ｂが互いに混合す
るのを阻止するための阻止部１６，３０を設け、
前記シリンダ３外周には外層材料Ｂの投入口４及
び内層材料Ａの投入口５をそれぞれ設け、外側ス
クリユー１０及び内側シリンダ１６にはそれらの
内外を連通させ、前記投入口５から供給された内
層材料Ａを前記内側通路２７に供給するための連
通部１５，１８をそれぞれ設けたことを特徴とす
る二層押出成形機。[Claims for Utility Model Registration] An outer screw 10 is rotatably disposed within the cylinder 3, an inner screw 19 is rotatably disposed within the outer screw 10, and the cylinder 3
Outer passage 11 between the inner wall and the outer screw 10
The outer layer material B supplied to the cylinder 3 is extruded to the die 26 at the front end of the cylinder 3, and the outer screw 10
Inner passage 27 between the inner wall and the inner screw 19
In the two-layer extrusion molding machine which extrudes the inner layer material A supplied to the die 26 to form the two-layer molded product P, there is provided a screw between the inner and outer passages 27 and 11 which protrudes forward from both the inner and outer screws 19 and 10. , dice 26
Preventing portions 16 and 30 are provided to prevent both the inner and outer layer materials A and B extruded from mixing with each other,
An input port 4 for the outer layer material B and an input port 5 for the inner layer material A are provided on the outer periphery of the cylinder 3, respectively, and the outer screw 10 and the inner cylinder 16 are communicated between the inside and outside, and the inner layer supplied from the input port 5 is provided. A two-layer extrusion molding machine characterized in that communication portions 15 and 18 are provided for supplying material A to the inner passage 27, respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989041263U JPH02133320U (en) | 1989-04-06 | 1989-04-06 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989041263U JPH02133320U (en) | 1989-04-06 | 1989-04-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02133320U true JPH02133320U (en) | 1990-11-06 |
Family
ID=31551782
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989041263U Pending JPH02133320U (en) | 1989-04-06 | 1989-04-06 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02133320U (en) |
-
1989
- 1989-04-06 JP JP1989041263U patent/JPH02133320U/ja active Pending
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