GB817270A - Improvements in the production of hollow moulded articles - Google Patents
Improvements in the production of hollow moulded articlesInfo
- Publication number
- GB817270A GB817270A GB1875056A GB1875056A GB817270A GB 817270 A GB817270 A GB 817270A GB 1875056 A GB1875056 A GB 1875056A GB 1875056 A GB1875056 A GB 1875056A GB 817270 A GB817270 A GB 817270A
- Authority
- GB
- United Kingdom
- Prior art keywords
- heel
- core
- moulding
- peg
- injecting
- 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
- 210000000474 Heel Anatomy 0.000 abstract 5
- 238000000465 moulding Methods 0.000 abstract 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 2
- 229920002301 Cellulose acetate Polymers 0.000 abstract 1
- 239000004793 Polystyrene Substances 0.000 abstract 1
- 229920001756 Polyvinyl chloride acetate Polymers 0.000 abstract 1
- UGZICOVULPINFH-UHFFFAOYSA-N acetic acid;butanoic acid Chemical compound CC(O)=O.CCCC(O)=O UGZICOVULPINFH-UHFFFAOYSA-N 0.000 abstract 1
- AVMNFQHJOOYCAP-UHFFFAOYSA-N acetic acid;propanoic acid Chemical compound CC(O)=O.CCC(O)=O AVMNFQHJOOYCAP-UHFFFAOYSA-N 0.000 abstract 1
- 239000000956 alloy Substances 0.000 abstract 1
- 229910045601 alloy Inorganic materials 0.000 abstract 1
- REDXJYDRNCIFBQ-UHFFFAOYSA-N aluminium(3+) Chemical class [Al+3] REDXJYDRNCIFBQ-UHFFFAOYSA-N 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 238000002844 melting Methods 0.000 abstract 1
- 229920002223 polystyrene Polymers 0.000 abstract 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D35/00—Producing footwear
- B29D35/12—Producing parts thereof, e.g. soles, heels, uppers, by a moulding technique
- B29D35/124—Heels
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B21/00—Heels; Top-pieces or top-lifts
-
- 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
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/44—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles
- B29C33/52—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles soluble or fusible
Abstract
817,270. Moulding hollow articles. PRIOR ENGINEERING Ltd., J., and PRIOR, J. Nov. 12, 1956 [June 18, 1956 ; July 4, 1956; Aug. 25, 1956], Nos. 18750/56, 20658/56 and 26060/56. Class 87(2). [Also in Group VII] A door knob, doll part or as shown, heel is moulded from polystyrene, polyvinyl chloride or cellulose acetate, acetate butyrate or acetate propionate by injecting the moulding material into a mould D having a core B of low melting point alloy mounted on a peg d. After moulding, the heel and core are removed from the mould and the core removed from the heel by, e.g. immersing the heel in hot water or by injecting a jet of water through the aperture made by the peg d. The heel may be reinforced by a pin or tube (see Figs. 4 and 5, not shown).
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB817270A true GB817270A (en) | 1959-07-29 |
Family
ID=1734159
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1875056A Expired GB817270A (en) | 1956-06-18 | Improvements in the production of hollow moulded articles |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB817270A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0173447A2 (en) * | 1984-07-24 | 1986-03-05 | Clarks Limited | Hollow body injection moulding process using a soluble core |
| GB2165482A (en) * | 1984-09-28 | 1986-04-16 | Frys Metals Ltd | An improved fusible metal core for use in plastics moulding |
| US5257922A (en) * | 1991-03-18 | 1993-11-02 | Solvay & Cie.(Societ E Anonyme | Device for injection moulding plastic parts by the fusible core technique |
-
1956
- 1956-06-18 GB GB1875056A patent/GB817270A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0173447A2 (en) * | 1984-07-24 | 1986-03-05 | Clarks Limited | Hollow body injection moulding process using a soluble core |
| EP0173447A3 (en) * | 1984-07-24 | 1988-02-03 | Clarks Limited | Hollow body injection moulding process using a soluble core |
| GB2165482A (en) * | 1984-09-28 | 1986-04-16 | Frys Metals Ltd | An improved fusible metal core for use in plastics moulding |
| US5257922A (en) * | 1991-03-18 | 1993-11-02 | Solvay & Cie.(Societ E Anonyme | Device for injection moulding plastic parts by the fusible core technique |
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