DK0658412T3 - Process for processing thermoplastic processable polymers by injection molding technique - Google Patents
Process for processing thermoplastic processable polymers by injection molding techniqueInfo
- Publication number
- DK0658412T3 DK0658412T3 DK94118626T DK94118626T DK0658412T3 DK 0658412 T3 DK0658412 T3 DK 0658412T3 DK 94118626 T DK94118626 T DK 94118626T DK 94118626 T DK94118626 T DK 94118626T DK 0658412 T3 DK0658412 T3 DK 0658412T3
- Authority
- DK
- Denmark
- Prior art keywords
- injection molding
- molding technique
- line
- processing thermoplastic
- processable polymers
- Prior art date
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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/0025—Preventing defects on the moulded article, e.g. weld lines, shrinkage marks
-
- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
- B29C45/56—Means for plasticising or homogenising the moulding material or forcing it into the mould using mould parts movable during or after injection, e.g. injection-compression moulding
- B29C45/5605—Rotatable mould parts
-
- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/0025—Preventing defects on the moulded article, e.g. weld lines, shrinkage marks
- B29C2045/0031—Movable mould wall parts in contact with weld lines, e.g. rotating pins for stirring the weld line
-
- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C2045/0098—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor shearing of the moulding material, e.g. for obtaining molecular orientation or reducing the viscosity
-
- 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
- B29K2105/0079—Liquid crystals
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Treatments Of Macromolecular Shaped Articles (AREA)
- Moulding By Coating Moulds (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
In the case of liquid crystal polymers, on the one hand the rigid molecule chains and on the other hand possibly present fibrous reinforcing materials are aligned largely parallel to a weld line or flow line, with the result that the physical properties are lacking in the region of the weld line or flow line. It is an object of the invention to provide a possible way of preventing weld lines or flow lines from occurring in the first place. For this purpose, the liquidified material is subjected to a shearing energy from its entry into the injection mould, over at least part of the length of the workpiece. This shearing energy is produced by relative movement between two surfaces of the mould parts. <IMAGE>
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH377893 | 1993-12-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
DK0658412T3 true DK0658412T3 (en) | 1998-09-28 |
Family
ID=4263291
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DK94118626T DK0658412T3 (en) | 1993-12-17 | 1994-11-26 | Process for processing thermoplastic processable polymers by injection molding technique |
Country Status (13)
Country | Link |
---|---|
EP (1) | EP0658412B1 (en) |
JP (1) | JPH07214596A (en) |
CN (1) | CN1065812C (en) |
AT (1) | ATE163590T1 (en) |
BR (1) | BR9404945A (en) |
CA (1) | CA2138221C (en) |
DE (1) | DE59405377D1 (en) |
DK (1) | DK0658412T3 (en) |
ES (1) | ES2114649T3 (en) |
FI (1) | FI106440B (en) |
IL (1) | IL111844A (en) |
NO (1) | NO308452B1 (en) |
ZA (1) | ZA949999B (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19720430C2 (en) * | 1997-05-15 | 2002-01-17 | Bsh Bosch Siemens Hausgeraete | Process and arrangement for injection molding to influence weld lines |
CN106273319A (en) * | 2016-10-13 | 2017-01-04 | 吕安民 | A kind of Plastic Welding extruding machine |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1113559B (en) * | 1959-07-31 | 1961-09-07 | Ankerwerk Gebr Goller | Process for the systematic control of the direction of orientation in the inner structure of parts made of thermoplastic material during their manufacture in injection molding machines |
US3263274A (en) * | 1963-03-14 | 1966-08-02 | Beckman Instruments Inc | High strength rotary member and method |
CA1243462A (en) * | 1984-12-21 | 1988-10-25 | Peter S. Allan | Moulding process |
JPS63145007A (en) * | 1986-12-09 | 1988-06-17 | Matsushita Electric Ind Co Ltd | Method for injection molding |
JPH0773860B2 (en) * | 1990-05-10 | 1995-08-09 | 修 浜田 | Molding die equipment |
-
1994
- 1994-11-26 ES ES94118626T patent/ES2114649T3/en not_active Expired - Lifetime
- 1994-11-26 DE DE59405377T patent/DE59405377D1/en not_active Expired - Fee Related
- 1994-11-26 EP EP94118626A patent/EP0658412B1/en not_active Expired - Lifetime
- 1994-11-26 DK DK94118626T patent/DK0658412T3/en active
- 1994-11-26 AT AT94118626T patent/ATE163590T1/en not_active IP Right Cessation
- 1994-12-01 IL IL11184494A patent/IL111844A/en active IP Right Grant
- 1994-12-12 BR BR9404945A patent/BR9404945A/en not_active IP Right Cessation
- 1994-12-15 CA CA002138221A patent/CA2138221C/en not_active Expired - Fee Related
- 1994-12-15 ZA ZA949999A patent/ZA949999B/en unknown
- 1994-12-16 NO NO944898A patent/NO308452B1/en not_active IP Right Cessation
- 1994-12-16 FI FI945938A patent/FI106440B/en active
- 1994-12-16 JP JP6313864A patent/JPH07214596A/en active Pending
- 1994-12-17 CN CN94119672A patent/CN1065812C/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
ATE163590T1 (en) | 1998-03-15 |
NO944898D0 (en) | 1994-12-16 |
DE59405377D1 (en) | 1998-04-09 |
CA2138221A1 (en) | 1995-06-18 |
ES2114649T3 (en) | 1998-06-01 |
FI945938A0 (en) | 1994-12-16 |
FI945938A (en) | 1995-06-18 |
CN1065812C (en) | 2001-05-16 |
NO944898L (en) | 1995-06-19 |
EP0658412A1 (en) | 1995-06-21 |
CA2138221C (en) | 1999-05-04 |
FI106440B (en) | 2001-02-15 |
ZA949999B (en) | 1995-08-22 |
CN1110647A (en) | 1995-10-25 |
JPH07214596A (en) | 1995-08-15 |
NO308452B1 (en) | 2000-09-18 |
IL111844A0 (en) | 1995-03-15 |
BR9404945A (en) | 1995-08-08 |
IL111844A (en) | 1998-12-06 |
EP0658412B1 (en) | 1998-03-04 |
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