CA2079425A1 - Method of making compression molded products - Google Patents
Method of making compression molded productsInfo
- Publication number
- CA2079425A1 CA2079425A1 CA002079425A CA2079425A CA2079425A1 CA 2079425 A1 CA2079425 A1 CA 2079425A1 CA 002079425 A CA002079425 A CA 002079425A CA 2079425 A CA2079425 A CA 2079425A CA 2079425 A1 CA2079425 A1 CA 2079425A1
- Authority
- CA
- Canada
- Prior art keywords
- article
- pellet
- nozzle
- resin
- mold
- 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
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
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
- B29C43/04—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles using movable moulds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B11/00—Making preforms
- B29B11/06—Making preforms by moulding the material
- B29B11/10—Extrusion moulding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B9/00—Making granules
- B29B9/02—Making granules by dividing preformed material
- B29B9/06—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
-
- 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
- B29C31/00—Handling, e.g. feeding of the material to be shaped, storage of plastics material before moulding; Automation, i.e. automated handling lines in plastics processing plants, e.g. using manipulators or robots
- B29C31/04—Feeding of the material to be moulded, e.g. into a mould cavity
- B29C31/042—Feeding of the material to be moulded, e.g. into a mould cavity using dispensing heads, e.g. extruders, placed over or apart from the moulds
- B29C31/048—Feeding of the material to be moulded, e.g. into a mould cavity using dispensing heads, e.g. extruders, placed over or apart from the moulds the material being severed at the dispensing head exit, e.g. as ring, drop or gob, and transported immediately into the mould, e.g. by gravity
-
- 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
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/34—Feeding the material to the mould or the compression means
-
- 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
- B29C48/04—Particle-shaped
-
- 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
- B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
- B29C48/80—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the plasticising zone, e.g. by heating cylinders
- B29C48/83—Heating or cooling the cylinders
- B29C48/832—Heating
-
- 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
- B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
- B29C48/86—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the nozzle zone
- B29C48/865—Heating
-
- 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
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
- B29C43/04—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles using movable moulds
- B29C2043/046—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles using movable moulds travelling between different stations, e.g. feeding, moulding, curing stations
-
- 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
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/34—Feeding the material to the mould or the compression means
- B29C2043/3433—Feeding the material to the mould or the compression means using dispensing heads, e.g. extruders, placed over or apart from the moulds
-
- 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
- B29C37/00—Component parts, details, accessories or auxiliary operations, not covered by group B29C33/00 or B29C35/00
- B29C37/006—Degassing moulding material or draining off gas during moulding
-
- 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
- B29C48/285—Feeding the extrusion material to the extruder
- B29C48/29—Feeding the extrusion material to the extruder in liquid form
-
- 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
- B29K2105/0005—Condition, form or state of moulded material or of the material to be shaped containing compounding ingredients
-
- 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
- B29K2105/0005—Condition, form or state of moulded material or of the material to be shaped containing compounding ingredients
- B29K2105/0032—Pigments, colouring agents or opacifiyng agents
-
- 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
- B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
- B29K2105/16—Fillers
-
- 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
- B29K2705/00—Use of metals, their alloys or their compounds, for preformed parts, e.g. for inserts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/56—Stoppers or lids for bottles, jars, or the like, e.g. closures
Abstract
The method of compression molding an article such as a closure wherein a thermoplastic resin is mixed with additives including a metallic pigment additive, extruded through a nozzle, cut by a blade into individual pellets, and each pellet is deposited into the cavity of a mold which is then closed to compression mold the pellet into an article, including the step of adding a blowing agent to the resin prior to extrusion in a quantity sufficient to randomize the metallic particles in the metallic pigment additive such that gaseous bubbles are provided in the extruded melt and that the gaseous bubbles are substantially expelled during the compression molding resulting in an article that is substantially free of blemishes which normally occur. Preferably, the method includes positioning a mixer plate in the path of the resin immediately prior to the nozzle.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US773,167 | 1991-10-08 | ||
US07/773,167 US5328650A (en) | 1991-10-08 | 1991-10-08 | Method of distributing pigments in compression molded products |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2079425A1 true CA2079425A1 (en) | 1993-04-09 |
CA2079425C CA2079425C (en) | 2001-03-27 |
Family
ID=25097405
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002079425A Expired - Fee Related CA2079425C (en) | 1991-10-08 | 1992-09-29 | Method of making compression molded products |
Country Status (10)
Country | Link |
---|---|
US (2) | US5328650A (en) |
EP (1) | EP0536988B1 (en) |
JP (1) | JPH0712618B2 (en) |
AT (1) | ATE149411T1 (en) |
AU (1) | AU654744B2 (en) |
CA (1) | CA2079425C (en) |
DE (1) | DE69217806T2 (en) |
ES (1) | ES2097885T3 (en) |
MX (1) | MX9205682A (en) |
ZA (1) | ZA927721B (en) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5328650A (en) * | 1991-10-08 | 1994-07-12 | Owens Illinois Closure Inc. | Method of distributing pigments in compression molded products |
US5958587A (en) * | 1997-04-21 | 1999-09-28 | Owens-Illinois Closure Inc. | Method of removing blemishes in compression molded articles |
WO2001064418A1 (en) * | 2000-02-29 | 2001-09-07 | Bemis Manufacturing Company | No nozzle member co-injection apparatus |
US6964748B2 (en) | 2000-11-30 | 2005-11-15 | Bemis Manufacturing Company | Co-injection methods using endothermic-blowing agents and products made therefrom |
JP4677684B2 (en) * | 2001-05-30 | 2011-04-27 | 株式会社豊田中央研究所 | Method for producing polymer-filler composite material |
US6702967B2 (en) | 2001-07-27 | 2004-03-09 | E. I. Du Pont De Nemours And Company | Process for preparing decorative surface materials having a decorative pattern |
US6733269B2 (en) * | 2002-04-09 | 2004-05-11 | Marland Mold, Inc. | Compression mold tool |
US7951449B2 (en) * | 2002-06-27 | 2011-05-31 | Wenguang Ma | Polyester core materials and structural sandwich composites thereof |
WO2005070644A1 (en) * | 2004-01-09 | 2005-08-04 | The Coca-Cola Company | Condensation compression molding process and apparatus for production of container preforms |
US20110089134A1 (en) * | 2009-08-28 | 2011-04-21 | Hugh Morton | Method of compression molding a plastic closure from foamed polymeric material |
RU2543901C2 (en) * | 2010-08-05 | 2015-03-10 | ФОРД ГЛОУБАЛ ТЕКНОЛОДЖИЗ, ЭлЭлСи | Device and method of injection moulding of foamed polymers |
IT201600081886A1 (en) * | 2016-08-03 | 2018-02-03 | Sacmi | APPARATUS AND METHOD OF FORMATION OF OPTIMIZED COLORED PLASTIC OBJECTS |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3089857A (en) * | 1960-04-12 | 1963-05-14 | Koppers Co Inc | Storage stable expandable polymeric composition containing expandable polymeric particles and two different blowing agents and method of making same |
GB1121654A (en) * | 1964-08-13 | 1968-07-31 | Dunlop Semtex Ltd | Method of making thermoplastic sheet material |
US3640861A (en) * | 1969-11-26 | 1972-02-08 | Frye Ind Inc | Process of making toner |
US3655863A (en) * | 1970-01-09 | 1972-04-11 | Monsanto Co | Method of making a contoured composite product |
US3962154A (en) * | 1971-06-01 | 1976-06-08 | Standard Oil Company | Method for producing an improved molded thermoplastic article |
US4164385A (en) * | 1978-05-12 | 1979-08-14 | Henkel Kommanditgesellschaft Auf Aktien | Extruder with mixing chambers |
GB1595850A (en) * | 1978-05-31 | 1981-08-19 | Hpm Corp | Extruder with multi-channel wave screw |
US4302410A (en) * | 1979-04-24 | 1981-11-24 | Phillips Cables Limited | Method producing a color coded, cellular thermoplastic resin coated wire and the materials necessary for the coating |
US4374795A (en) * | 1980-09-11 | 1983-02-22 | Bell Telephone Laboratories, Incorporated | Production of mold charge of elastomeric material containing magnetic oxide filler |
US4596684A (en) * | 1981-07-30 | 1986-06-24 | Toyo Rubber Chemical Industrial Corporation | Method for manufacturing low density rubber foamed body |
US4459249A (en) * | 1982-01-22 | 1984-07-10 | Inoue Mtp Kabushiki Kaisha | Method of manufacturing a foamed protective and decorative molding for an automobile |
US4552708A (en) * | 1983-10-14 | 1985-11-12 | Mitsubishi Petrochemical Co., Ltd. | Method for producing crosslinked foam |
JPS60110731A (en) * | 1983-11-21 | 1985-06-17 | Shin Etsu Chem Co Ltd | Expandable vinyl chloride resin composition |
US4548776A (en) * | 1983-11-23 | 1985-10-22 | Techplastics, Inc. | Method and apparatus for molding structural foam articles |
US4755343A (en) * | 1986-09-10 | 1988-07-05 | United Technologies Corporation | Method of molding using a solid flowable polymer medium with metal additives |
JPS6375044A (en) * | 1986-09-17 | 1988-04-05 | Toto Ltd | Production of open-cell porous material |
US4891399A (en) * | 1986-10-28 | 1990-01-02 | Calp Corporation | Thermoplastic resin-based molding composition |
US5023041A (en) * | 1987-12-10 | 1991-06-11 | General Electric Company | Method for making a fiber reinforced composite article |
US5328650A (en) * | 1991-10-08 | 1994-07-12 | Owens Illinois Closure Inc. | Method of distributing pigments in compression molded products |
-
1991
- 1991-10-08 US US07/773,167 patent/US5328650A/en not_active Expired - Fee Related
-
1992
- 1992-09-29 CA CA002079425A patent/CA2079425C/en not_active Expired - Fee Related
- 1992-10-02 AU AU26184/92A patent/AU654744B2/en not_active Ceased
- 1992-10-05 MX MX9205682A patent/MX9205682A/en not_active IP Right Cessation
- 1992-10-06 JP JP4290920A patent/JPH0712618B2/en not_active Expired - Lifetime
- 1992-10-07 DE DE69217806T patent/DE69217806T2/en not_active Expired - Fee Related
- 1992-10-07 ZA ZA927721A patent/ZA927721B/en unknown
- 1992-10-07 AT AT92309124T patent/ATE149411T1/en not_active IP Right Cessation
- 1992-10-07 EP EP92309124A patent/EP0536988B1/en not_active Expired - Lifetime
- 1992-10-07 ES ES92309124T patent/ES2097885T3/en not_active Expired - Lifetime
-
1994
- 1994-05-12 US US08/241,902 patent/US5603873A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE69217806D1 (en) | 1997-04-10 |
JPH0712618B2 (en) | 1995-02-15 |
CA2079425C (en) | 2001-03-27 |
US5328650A (en) | 1994-07-12 |
JPH05318511A (en) | 1993-12-03 |
ZA927721B (en) | 1993-04-19 |
DE69217806T2 (en) | 1997-06-19 |
EP0536988A2 (en) | 1993-04-14 |
EP0536988B1 (en) | 1997-03-05 |
MX9205682A (en) | 1993-07-01 |
ES2097885T3 (en) | 1997-04-16 |
AU2618492A (en) | 1993-04-22 |
ATE149411T1 (en) | 1997-03-15 |
US5603873A (en) | 1997-02-18 |
EP0536988A3 (en) | 1993-06-23 |
AU654744B2 (en) | 1994-11-17 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKLA | Lapsed |