GB796821A - Method of and apparatus for moulding containers, such as bottles, cans, boxes, and the like from thermoplastic material - Google Patents
Method of and apparatus for moulding containers, such as bottles, cans, boxes, and the like from thermoplastic materialInfo
- Publication number
- GB796821A GB796821A GB20815/55A GB2081555A GB796821A GB 796821 A GB796821 A GB 796821A GB 20815/55 A GB20815/55 A GB 20815/55A GB 2081555 A GB2081555 A GB 2081555A GB 796821 A GB796821 A GB 796821A
- Authority
- GB
- United Kingdom
- Prior art keywords
- platen
- sheet
- containers
- mould
- moulding
- 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
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
- B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
- B29C51/04—Combined thermoforming and prestretching, e.g. biaxial stretching
-
- 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
- B29C31/004—Arrangements for converting the motion of a material which is continuously fed to a working station in a stepwise motion
-
- 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
- B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
- B29C51/10—Forming by pressure difference, e.g. vacuum
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Robotics (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
Abstract
796,821. Moulding thermoplastic containers. AMERICAN PLASTON CORPORATION. July 19, 1955, No. 20815/55. Class 87(2). Bottles and other containers are moulded from a sheet of thermoplastic material by a method which comprises applying a die to the sheet so as to draw the plastic into a mould cavity which is larger than the die and to form an airtight seal at the mouth of the mould and diffusing air under pressure into the drawn plastic so as to expand it against the walls of the mould, to form the container. A sheet of thermoplastic material 62, e.g., polystyrene, is supplied from an extruder 60 of known construction and is intermittently advanced past an electric radiant heater 78 which heats the material uniformly to the desired moulding temperature. To advance the sheet it is gripped along its edges by grippers 64, 66, the operation of which, as well as other elements of the apparatus, is governed in known manner by timing devices and control valves operated from a control panel 58. The grippers slide on guides 80, 82, Fig. 3, actuated by hydraulic cylinders 68, 70, and hold the sheet stationary while a platen 42, carrying dies 40, descends for the moulding operation. Corresponding to the dies 40 are moulds 30. Tension in the extruded sheet is maintained by a roller 76. Each die 40 comprises a block 106, Fig. 6, and a plunger 108 secured by a bolt 110. The plunger is smaller than the mould cavity 100 formed in a body 96 and in a hard steel die ring 98, comprising a mould assembly 30. On the descent of the platen 42, by the movement of a piston 46 in a cylinder 48, plastic material is drawn into the moulds and the containers partially formed. A partially formed container is expanded against the wall of its mould cavity by compressed air introduced into the plunger 108, which is hollow, through ports 134 to which it is directed by a passageway in the platen 42, which is supplied from a compressed air source through a flexible conduit 126. The air leaves through passages 136 in the wall of the plunger and is diffused by the action of a covering 138 of cotton, nylon yarn or other fabric, this diffusion obviating lumps in the moulded article. A rounded flange 112, Fig. 8, is formed on the die ring 98 and has a shoulder 116. The plastic sheet 62 is gripped between the flange 112 and a flange 120 on the die block 106 and seals the upper ends of the partially formed containers against escape of air. As soon as the plastic material has been forced against the mould wall the compressed air, which is sufficient to cool it, is shut off and the platen 41 is raised slightly and allowed to fall again, at which the sheet is severed between the edges of the flange 120 and the shoulder 116. The platen 42 is then raised to withdraw the plungers 108, and a hydraulic cylinder 32 is operated and moves the platen 28, carrying the moulds and moulded containers, along-rails 24, 26 to a position above a platen 84. A hydraulic cylinder 88 then raises the platen 84, carrying ejector pins, and these pass through holes 104 and eject the moulded containers. Compressed air is forced through holes 80 in a pipe 92 to blow the ejected containers across the platen 28 to a shoot or conveyer. The waste parts of the sheet may be re-processed. Strengthening criss-cross ribs may be embossed inside the container by fitting metallic fabric over the woven fabric covering the moulding plungers, or embossing may be done during initial preforming by the plunger. When moulding containers with restricted mouths, e.g., bottles, split moulds are necessary for removal of the moulded article, Figs. 12, 13. The mould body is in two halves 176, 178 and the die ring in two halves 180,182. The halves 176, 178 are slidable on rods 184, 186 carried by brackets 188, 190 on the platen 28. Springs 192, 194 tend to separate the mould halves, which are held together, during the moulding, by the pressure of cam fingers 200, 202, depending from the platen 42, against rollers 196, 198 mounted on the mould halves.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GR336593X | 1954-07-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB796821A true GB796821A (en) | 1958-06-18 |
Family
ID=10927198
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB20815/55A Expired GB796821A (en) | 1954-07-20 | 1955-07-19 | Method of and apparatus for moulding containers, such as bottles, cans, boxes, and the like from thermoplastic material |
Country Status (7)
Country | Link |
---|---|
BE (1) | BE539961A (en) |
CH (1) | CH336593A (en) |
DE (1) | DE1165241B (en) |
FR (1) | FR1134142A (en) |
GB (1) | GB796821A (en) |
IT (1) | IT538182A (en) |
NO (1) | NO93963A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3115677A (en) * | 1957-11-08 | 1963-12-31 | Thiel Alfons Wilhelm | Apparatus for the production of shaped plastic workpieces |
US3420930A (en) * | 1963-12-17 | 1969-01-07 | Continental Can Co | Method of drawing cup-shaped articles |
Families Citing this family (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1166455B (en) * | 1960-07-12 | 1964-03-26 | Illinois Tool Works | Device for producing hollow bodies from a strip of thermoplastic material |
DE1166454B (en) * | 1957-06-18 | 1964-03-26 | Lorenz Hupfauf | Method and device for producing hollow bodies from a plastic film |
DE1175863B (en) * | 1957-06-21 | 1964-08-13 | Bastert Werke Gustav Bastert | Method and device for the stepwise stretching of a film made of thermoplastic plastic |
DE1126590B (en) * | 1957-11-08 | 1962-03-29 | Alfons Thiel | Method and device for vacuum deforming foils in sheet or web form made of thermoplastic material using a pre-stretching process |
DE1187784B (en) * | 1958-11-04 | 1965-02-25 | Alfons Thiel | Method and device for the production of thin-walled plastic articles with a rounded edge with a rounded cross-section |
US2983955A (en) * | 1958-08-25 | 1961-05-16 | Walter S Gajdosik | Method and apparatus for forming thermoplastic plastic |
DE1174047B (en) * | 1958-12-13 | 1964-07-16 | Friedrich Bruemmer | Process and device for the continuous production of containers from plastic film using the deep-drawing process |
DE1182413B (en) * | 1959-08-14 | 1964-11-26 | Friedrich Bruemmer | Device for the continuous production of containers from plastic film in the deep-drawing process |
US3081491A (en) * | 1958-09-17 | 1963-03-19 | Illinois Tool Works | Molding machine |
US2985914A (en) * | 1958-10-03 | 1961-05-30 | Continental Can Co | Plastic cup mold |
DE1291107B (en) * | 1960-04-19 | 1969-03-20 | Lindemann Gmbh Maschinenfabrik | Device for supplying goods to be packaged using the method of skin packing with a plastic film or molding tools for deforming this film by stretching |
DE1167512B (en) * | 1960-09-21 | 1964-04-09 | Wikusta Kunststoffanwendung G | Device for drawing hollow bodies from sheets and foils made of thermoplastic material |
DE1228394B (en) * | 1961-05-03 | 1966-11-10 | Heinrich Pappert | Device intended for the two-stage mechanical drawing of hollow bodies made of thermoplastic material |
DE1227638B (en) * | 1961-06-23 | 1966-10-27 | Bebo Plastik G M B H | Device for preparatory heating for the subsequent deformation, in particular deep drawing, of a continuous sheet of thermoplastic material |
CH398956A (en) * | 1962-09-20 | 1966-03-15 | Dahpe Ag | Machine for the production of deep-drawn hollow bodies made of thermoplastic material |
DE1299852B (en) * | 1963-04-29 | 1969-07-24 | Schmidt Max | Device for the continuous production of sheets or foils made of thermoplastic material with a large number of vacuum-drawn semi-hollow bodies |
US3328148A (en) * | 1963-06-19 | 1967-06-27 | Corning Glass Works | Glass-forming method |
FR2317079A1 (en) * | 1975-07-09 | 1977-02-04 | Gatrun Anstalt | CONTAINER SUCH AS A CUP OR BOTTLE OF THERMOPLASTIC MATERIAL AND ITS MANUFACTURING PROCESS |
US4155697A (en) * | 1976-11-29 | 1979-05-22 | International Paper Company | Container for storing food and process and apparatus for making that container |
DE3502718A1 (en) * | 1984-02-07 | 1985-08-08 | Maschinenbau Gabler GmbH, 2400 Lübeck | Device for producing thermoformed parts from a thermoplastic and process carried out with this device |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2282423A (en) * | 1939-09-15 | 1942-05-12 | Plax Corp | Process and apparatus for forming articles from organic plastic material |
US2270187A (en) * | 1940-10-04 | 1942-01-13 | Dow Chemical Co | Machine for drawing and trimming thermoplastic containers |
GB684611A (en) * | 1949-11-29 | 1952-12-24 | T H P London Ltd | Improvements in or relating to a method of and means for blow-moulding plastic material |
-
0
- IT IT538182D patent/IT538182A/it unknown
- BE BE539961D patent/BE539961A/xx unknown
- NO NO93963D patent/NO93963A/no unknown
-
1955
- 1955-06-30 CH CH336593D patent/CH336593A/en unknown
- 1955-07-09 DE DEA23043A patent/DE1165241B/en active Pending
- 1955-07-19 GB GB20815/55A patent/GB796821A/en not_active Expired
- 1955-07-20 FR FR1134142D patent/FR1134142A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3115677A (en) * | 1957-11-08 | 1963-12-31 | Thiel Alfons Wilhelm | Apparatus for the production of shaped plastic workpieces |
US3420930A (en) * | 1963-12-17 | 1969-01-07 | Continental Can Co | Method of drawing cup-shaped articles |
Also Published As
Publication number | Publication date |
---|---|
DE1165241B (en) | 1964-03-12 |
NO93963A (en) | |
BE539961A (en) | |
CH336593A (en) | 1959-02-28 |
IT538182A (en) | |
FR1134142A (en) | 1957-04-08 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB796821A (en) | Method of and apparatus for moulding containers, such as bottles, cans, boxes, and the like from thermoplastic material | |
US2891280A (en) | Method and apparatus for forming hollow plastic articles | |
US3027596A (en) | Apparatus for vacuum-forming dished and flat articles | |
US2962758A (en) | Method and apparatus for forming hollow plastic articles | |
US4327052A (en) | Process for making containers | |
US4034054A (en) | Process for thermoforming hollow articles | |
US3470281A (en) | Method of forming a flanged container | |
US4427476A (en) | Method of utilizing reciprocating clamp apparatus to thermoform plastic containers | |
US4168598A (en) | Vacuum packaging method and apparatus | |
EP0086385A1 (en) | Molding method and apparatus | |
US3114931A (en) | Internal air cooling of blow molded articles | |
US3809517A (en) | Blow injection apparatus | |
ES429188A1 (en) | Compression molding apparatus | |
GB861212A (en) | Improvements in apparatus for the injection and blow-moulding of bottles | |
GB972488A (en) | Method and apparatus for forming containers or the like from thermoplastic sheet material | |
US4435244A (en) | Reciprocating clamp apparatus for thermoforming plastic containers | |
GB1038051A (en) | Improvements in or relating to apparatus for manufacturing hollow articles of thermoplastic material | |
US2447415A (en) | Plastic forming apparatus and method | |
GB1095632A (en) | An apparatus for the automatic moulding of hollow articles from sheet plastics material | |
GB1060399A (en) | Method and apparatus of manufacturing a hollow moulded article | |
US3178771A (en) | Apparatus for the production of thinwalled containers or receptacles from a thermoplastic film or sheet | |
GB841637A (en) | Improvements in and relating to the production of tubes of synthetic resinous material | |
US2975472A (en) | Method and apparatus for blowing hollow plastic articles | |
GB1036753A (en) | Method and apparatus for ejecting moulded articles | |
GB1378697A (en) | Method and apparatus for the production of hollow articles with a neck part |