IE32745L - Moulding plastics articles. - Google Patents
Moulding plastics articles.Info
- Publication number
- IE32745L IE32745L IE690216A IE21669A IE32745L IE 32745 L IE32745 L IE 32745L IE 690216 A IE690216 A IE 690216A IE 21669 A IE21669 A IE 21669A IE 32745 L IE32745 L IE 32745L
- Authority
- IE
- Ireland
- Prior art keywords
- preform
- injected
- cavity
- mould
- particles
- 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
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/40—Removing or ejecting moulded articles
- B29C45/44—Removing or ejecting moulded articles for undercut articles
- B29C45/4457—Removing or ejecting moulded articles for undercut articles using fusible, soluble or destructible cores
-
- 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
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14778—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the article consisting of a material with particular properties, e.g. porous, brittle
- B29C45/14795—Porous or permeable material, e.g. foam
-
- 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
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14819—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the inserts being completely encapsulated
-
- 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
- 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
- B29K2101/00—Use of unspecified macromolecular compounds as moulding material
- B29K2101/10—Thermosetting resins
-
- 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
- B29K2101/00—Use of unspecified macromolecular compounds as moulding material
- B29K2101/12—Thermoplastic materials
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
1,259,349. Moulding filled articles. LIBBEYOWENS-FORD CO. 19 Feb., 1969 [27 Feb., 1968], No. 8954/69. Heading B5A. General method.-Articles are moulded by providing an assembly of filler particles which are tightly packed into contact under pressure and provide pores between adjacent particles which are then filled, after release of the compacting pressure, by injecting thermoplastics or thermosetting liquid or powder resin into the assembly. The assembly may comprise a non-self-sustaining assembly which may be compacted around removable cores and/or inserts in the mould cavity. Alternatively, the particles may be cohered into a self-sustaining form by an adhesive, e.g. sodium silicate or a plastics which may be the same or different from that injected into the pores, or by sintering. Heat, solvent, or vibrationally removable cores may be employed and they may be coated to provide a shell or encased in a shell which remains in the article. Examples.-A self-sustaining preform 41 (Example 1) is formed by filling, by pouring or blowing, a preform cavity 25 with spherical aluminum pellets coated with sodium silicate, and compacting the particles, e.g. at 5 p.s.i., around a removable core 36. CO 2 gas is introduced into the assembly from conduit 39 through a mould cover 37 held in place by an upper platen 54. The preform is removed from the mould cavity 25 and after heating, e.g. to 100‹ F., is located within a close fitting cavity, Figs. 6 and 7 (not shown), of an injection mould heated also to 100‹ F. and into which NYLON 6 is injected at 525‹ F. and 20,000 p.s.i. from a horizontal cylinder screw-ram machine. The removable core 36 comprises sand grains bound together with CO 2 hardened sodium silicate, dipped into precoating material and then sprayed with polyvinyl alcohol release agent; a shell of epoxy resin, which remains in the article, may be coated on the core. The core 36 is removed either by a jet of water directed thereat in a water container, or by mechanical vibration of the article. The preform 41 (Example 2) may also be moulded in the cavity 25 from randomly shaped and sized aluminium particles wetted with silane and mixed with phenolic resin moulding powder, the mould being heated by resistance heaters 40 and hot air introduced into the cavity 25. The preform at 70‹ F. was introduced into the close fitting injection mould at the same temperature, and polyethylene injected thereinto at 410‹ to 475‹ F. at 20,000 p.s.i. A preform 41 formed as in either Example I or II may be injected with thermosetting resin, from either a horizontal or vertical cylinder machine. A preform 56 (Example 4) of sodium silicate bound aluminium particles, and incorporating a threaded member 57, may in addition be provided with a coating of the injected resin by locating it by the member 57 within a cavity 65 of a vertical cylinder injection machine into which polyvinyl chloride resin is injected through gates 68, the preform and mould being respectively at 70‹ and 50‹ F. and the injection being at 325‹ F. and 12,000 p.s.i. The polyvinyl chloride (Example 5) may comprise material containing azodicarbamide foaming agent injected at 15,000 p.s.i. to produce an unfoamed filling of the preform 56 and a similar exterior surface, with an intermediate foamed region. The surface of cavity 65 may be configured to simulate leather or fabric. It is stated that the particulate fillers may also be elongated, or of cube or plate form, and may also comprise wood, steel, sponge iron particles, walnut shells, acrylonitrile-butadiene-styrene resin, glass beads, asbestos, and marble and stone. The injected resins may also comprise polyethylene, polypropylene, acrylics, polystyrene, acrylonitrile - butadiene - styrene, polyurethane, synthetic rubbers, polyesters, polycarbonates, epoxies, and silicones.
[GB1259349A]
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US70869868A | 1968-02-27 | 1968-02-27 |
Publications (2)
Publication Number | Publication Date |
---|---|
IE32745L true IE32745L (en) | 1969-08-27 |
IE32745B1 IE32745B1 (en) | 1973-11-14 |
Family
ID=24846844
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IE216/69A IE32745B1 (en) | 1968-02-27 | 1969-02-19 | Molded articles and method of making the same |
Country Status (11)
Country | Link |
---|---|
BE (1) | BE728916A (en) |
CA (1) | CA930517A (en) |
CH (1) | CH494104A (en) |
DE (1) | DE1910627A1 (en) |
FR (1) | FR2002693A1 (en) |
GB (1) | GB1259349A (en) |
IE (1) | IE32745B1 (en) |
IL (1) | IL31663A (en) |
LU (1) | LU58099A1 (en) |
NL (1) | NL6903045A (en) |
SE (1) | SE347457B (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CZ306130B6 (en) * | 2009-07-20 | 2016-08-17 | MODELÁRNA LIAZ spol. s r. o. | Mold for polyurethane foam material |
EP2371511B1 (en) * | 2010-03-31 | 2013-03-06 | Bayer MaterialScience AG | Composite component with insert and method for the production therof |
US11124641B2 (en) | 2016-11-30 | 2021-09-21 | Kimberly-Clark Worldwide, Inc. | Thermoplastic injection molded and flushable material |
MX2019005528A (en) | 2016-11-30 | 2019-08-12 | Kimberly Clark Co | Thermoplastic injection molded and flushable tampon applicator. |
CN111027658A (en) * | 2019-12-30 | 2020-04-17 | 江苏通润装备科技股份有限公司 | Tool with RFID chip |
CN111452277B (en) * | 2020-04-01 | 2022-07-01 | 陕西科隆新材料科技股份有限公司 | Forming device and process of rubber sponge barrel-shaped section bar |
CN111452305B (en) * | 2020-05-29 | 2022-02-11 | 江苏华海诚科新材料股份有限公司 | Large-particle testing mold for epoxy molding compound and testing method thereof |
CN117124539B (en) * | 2023-10-20 | 2023-12-22 | 福建军信特种装备有限公司 | Anti-adhesion plastic injection molding machine |
-
1969
- 1969-02-18 CA CA043259A patent/CA930517A/en not_active Expired
- 1969-02-19 IE IE216/69A patent/IE32745B1/en unknown
- 1969-02-19 GB GB1259349D patent/GB1259349A/en not_active Expired
- 1969-02-20 IL IL31663A patent/IL31663A/en unknown
- 1969-02-25 BE BE728916D patent/BE728916A/xx unknown
- 1969-02-26 SE SE02594/69A patent/SE347457B/xx unknown
- 1969-02-26 CH CH288269A patent/CH494104A/en not_active IP Right Cessation
- 1969-02-26 LU LU58099D patent/LU58099A1/xx unknown
- 1969-02-26 FR FR6904987A patent/FR2002693A1/fr not_active Withdrawn
- 1969-02-27 DE DE19691910627 patent/DE1910627A1/en active Pending
- 1969-02-27 NL NL6903045A patent/NL6903045A/xx unknown
Also Published As
Publication number | Publication date |
---|---|
CH494104A (en) | 1970-07-31 |
IL31663A (en) | 1971-11-29 |
SE347457B (en) | 1972-08-07 |
CA930517A (en) | 1973-07-24 |
FR2002693A1 (en) | 1969-10-31 |
DE1910627A1 (en) | 1969-09-18 |
NL6903045A (en) | 1969-08-29 |
LU58099A1 (en) | 1969-06-03 |
GB1259349A (en) | 1972-01-05 |
IL31663A0 (en) | 1969-04-30 |
BE728916A (en) | 1969-08-01 |
IE32745B1 (en) | 1973-11-14 |
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