GB2177044A - Method and apparatus for extrusion - Google Patents
Method and apparatus for extrusion Download PDFInfo
- Publication number
- GB2177044A GB2177044A GB08613025A GB8613025A GB2177044A GB 2177044 A GB2177044 A GB 2177044A GB 08613025 A GB08613025 A GB 08613025A GB 8613025 A GB8613025 A GB 8613025A GB 2177044 A GB2177044 A GB 2177044A
- Authority
- GB
- United Kingdom
- Prior art keywords
- die
- section
- linear cross
- extrudable material
- extrudable
- 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
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B13/00—Rolling molten glass, i.e. where the molten glass is shaped by rolling
- C03B13/01—Rolling profiled glass articles, e.g. with I, L, T cross-sectional profiles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/02—Making uncoated products
- B21C23/04—Making uncoated products by direct extrusion
- B21C23/06—Making sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
- B28B3/20—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein the material is extruded
- B28B3/26—Extrusion dies
-
- 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
- B29C48/07—Flat, e.g. panels
-
- 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
- B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
-
- 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
- B29C48/12—Articles with an irregular circumference when viewed in cross-section, e.g. window profiles
-
- 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
- B29C48/30—Extrusion nozzles or dies
- B29C48/305—Extrusion nozzles or dies having a wide opening, e.g. for forming sheets
-
- 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
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/90—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article
-
- 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
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/90—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article
- B29C48/908—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article characterised by calibrator surface, e.g. structure or holes for lubrication, cooling or venting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
- B30B11/22—Extrusion presses; Dies therefor
- B30B11/221—Extrusion presses; Dies therefor extrusion dies
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B17/00—Forming molten glass by flowing-out, pushing-out, extruding or drawing downwardly or laterally from forming slits or by overflowing over lips
- C03B17/06—Forming glass sheets
-
- 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
- B29C48/001—Combinations of extrusion moulding with other shaping operations
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Ceramic Engineering (AREA)
- Press-Shaping Or Shaping Using Conveyers (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
Method of forming an extrudable material into a secondary shape of part or predominantly linear cross-section from a primary shape of predominantly non-linear cross-section which comprises passing extrudable material through a contoured die wherein a slit is made in the material to form two initially adjacent ends which are separated on passage through the die as the material is formed about a forming block towards an exit of part or predominantly linear cross-section. Die apparatus useful in this method comprises an inlet (13) of predominantly non-linear cross-section, a forming block (4) extending through the die, an exit of part or predominantly linear cross-section and slitting means (5) to form a slit separating edges in extrudable material passed through the inlet. Although it is preferred to extrude fine-particle size cementitious compositions, the process and apparatus may be used for any material capable of extrusion. One application for extrusions obtained is in the manufacture of skirting boards.
Description
SPECIFICATION
Method and apparatus for extrusion
This invention concerns a method and apparatus for extrusion, in particular a method of converting an extrusion from one cross-sectional form to a different form and also a die apparatus for use in this method.
The extrusion of materials such as plastics oraluminium is a well-known process and this invention finds application within the technical field of extrusion and also in technical fields concerned with the end use of extrusions formed by the method.
It is known to extrude solid circular or hollow circu- lar items such as pipes ortubes in, e.g. plastics or aluminium. It is also known to extrude extrudable mateials in lengths which have short widths. There can be practical difficulties in attempting to extrude comparatively wide objects and articles from certain materials. In general, it is relativelyconvenientto extrude materials in the form of a solid or hollow pipe and this applies particularly with regard to cementcontaining extrudable compositions.
Cementitious compositions which have attractive flexural strength properties and which can be extruded are disclosed in European Patent Application Nos. 21681,21682,38126, 30408 and 55035, all in the name ICI plc. In the method of the present invention it is preferred to use cementitious extrudable compositions as disclosed in the aforementioned Specifications, as exemplified therein and/or as claimed therein.
According to this invention there is provided a method of forming an extrudable material into a secondary shape of part or predominantly linear cross-section from a primary shape of predominantly non-linear cross-section which comprises passing extrudable material through a contoured die wherein a slit is made in the material to form two initially adjacent ends which are separated on passage through the die as the material is formed about a forming blocktowardsan exit of partorpredominant- ly linear cross-section.
The invention further provides a die, which may be a two-part die, suitable for use in the method and comprising an inlet of predominantly non-linear cross-section, a forming block extending through the whole or part of the die, an exit of part or predomi nantly linear cross-section and slitting means capable offorming a slit in extrudable material passed through the inlet.
Preferably the inlet profile is substantially circular and hollow and/orthe exit profile substantially linear.
The forming block may be integral with the slitting means which latter may comprise a wedge having a tapered leading edge. In preferredembodimentsthe forming block may include one or more elongate slits terminating at the exit. Atwo-part die is conveniently provided, the parts when assembled defining a passage for extrudable material which itself may be ini tially solid or hollow, circular preferably or otherwise having a continuous circumference which is separated by the slitting means.
The extrudable material may comprise a hydraulic cement composition comprising a mixture of at least one particulate hydraulic cement (a material which sets and hardens in the presence of water) and water in which the weight average means particle size ofthe particles of the cement is less than 20 Fm, wherein the hydraulic cement is substantiallyfree of particles having a size above 30 Wm, and in which the proportion of water is not more than 20% by weight of the hydraulic cement in the composition. The hydraulic cement maybeasilicatecement,forexamplePortlandce- ment, or an aluminate cement such as calcium aluminate cement or a calcium sulphate hemihydrate cement, or a mixture of one or more thereof. The composition may include polymer and/or dispersant.
The extrudable material may alternatively comprise a cementitious composition comprising:
(i) at least one hydraulic cement,
(ii) water in a proportion of no more than 25% by weight of the hydrualic cement in the composition,
(iii) at least one organic polymeric water soluble or water-dispersable additive which is capable of aiding in the processing of the composition in a proportion of 0.5 to 10% by weight of the hydraulic cement in the composition, and
(iv) at least one particulate material insoluble in the composition and having an ultimate particle size of less than 0.1 Fm in a proportion of 0.5 to 10% by weight of the hydraulic cement in the composition.
The extrudable material may alternatively comprise a hydraulic cement composition in which the particle size distribution of the hydraulic cement is bimodal characterized in that the cement comprises:
(a) at least 50% by weight of particles of size in the range60to 110 Fm.
(b) at least 5% by weight of particles of size in the range 1 to 10#im,and (c) not greaterthan 20% by weight of particles of size outside the ranges 1 to 10 Fm and 60to 110 Fm.
The extrudable material may alternatively comprise a cementitious composition comprising: (a) atleastone hydrauliccement, (b) water in a proportion of not more than 25% by weight of the composition, and
(c) at least one water-soluble orwater/dispersable organic polymer of co-polymer in a proportion of 1 to 15%byweightofthehydrauliccementinthecom- position, the polymer preferably comprising hydrolised poly (viny)acetate.
The aforementioned cementitious compositions can be formulated into a mouldable, readily processed dough which is suitable for extrusion in conventional extrusion apparatus. It is, however, preferred to use a twin screw compounder coupled to a die according to this invention for effecting the extrusion processes. An example of a suitable extruding apparatus comprises a multi-purpose compounder having a variable orifice such as that produced by Baker
Perkins and identified by the reference MPCN. Such an extruding apparatus can thoroughly mix the preferred cementitious compositions for use in the invention and subsequently form the extrudable material before entering the die according to the present invention.
In orderthatthe invention may be further illus- trated and readily carried into effect, embodiments thereof will now be describred by way of example onlywith reference to the accompanying drawings and in which:
Figure 1 is an isometric front view of a die,
Figure 2 is an isometric rear view of a die,
Figure 3 is a view of the die of Figures 1 and 2 with upper and lower parts separated, Figure 4 is a side elevation,
Figure 5is a rear view,
Figure 6is a front view ofthe die,
Figure 7is a profile of extrudable material on entry into the die, Figure 8 shows two superposed extrusions,
Figure 9 shows an alternative profile of extrudable material, and
Figure 10 shows the extruded material of Figure 9 after exit from the die.
Referring firstly to Figures 1-6 of the drawings, the die 1 comprises a two-part housing, a contoured aperture housing 2 and a forming block housing 3.
Theforming block has a substantially flat inlet surface 4 and a contoured surface 9 as clearly shown in Figure 3. Integrally secured to the housing 3 and forming block 4,9 is slitting means in the form of a sharp edge 5 having tapered edges 6 and 7 and so defining a substantiallywedge-shaped component.
Referring to Figures 1 and 6, the inlet passageway 13 for receiving extrudable material from an extruding apparatus is defined by the space between the contoured surface 9 oftheforming blockandthe contoured suface 10 of the aperture housing 2. The inlet aperture in this embodiment is thus substantial- lycircularand hollow and the extrudable material on entering the die assumes a shape illustrated in Figure 7 which will be described in greater detail hereafter.
The forming block4 is provided with first and second slots 11 and 12 respectively which extend the lengthoftheforming blockfrom inlettoexitand maintain a substantially constant cross-section. The inlet aperture 8 in the aperture housing 2 defines the maximum external diameter of extrudable material that can enter the die. The thickness of extrudable material entering is maintained substantiallycon- stantthroughout its travel from the inlet 13 to the exit 14, although the particular internal dimensions may not be regarded as critical in this respect. The dimensions of the exit 14 are selected forthe particular end use of the extruded material.The number, dimension and positioning of slots 11 and 12 are alsoselectd according to the end use of the extruded product. In one embodiment ofthis invention which is not illustrated the slots 11 and 12 are absent whereby an extrudable material may enter in hollow cylindrical form and exit in perfectly linearform.
The die 1 may be made of any material capable of withstanding pressures and temperatures usually associated with extrusion processes, and it is preferred to extrude cementitious compositions which are initially in the form of a pliable dough through the die apparatus.
Referring next to Figure 7, this shows the profile of extrudable material as it enters the inlet and viewed as in the direction of Figure 5. The extrudable material 15 comprises extrudable cementitious composition which has been extruded from an extrusion apparatus in the form of a substantially circular and hollow cylinder. The material forms ribs 11 a and 12a on entry into the respective slots 11 and 12 in the forming block.Aslit 19 isfored on entry into the dieasthe extrudable material contacts the sharp edge 5 ofthe slitting means. This forms two initially adjacent ends 20,21 which are caused to separate as the material passes through the die.
Figure 8 shows a pair of extrusions supersposed in face-to-face relationship and forming a rectangular channel section divided into three internal channels.
The profile of each ofthe extrusions 1 5a corresponds with the cross-section of the exit 14 of the die. The arrangement as illustrated may be useful as a doublesided skirting board, wherein electrical wiring and/or piping can be concealed within the internal channels.
Such an extrusion of cementitious material,when set hard, can be extremely durable and have high flexural strength. Additionally, such composition may be more economical in use than other extrudable materials such as plastics materials.
Referring finally to Figures 9 and 10, the initial form of an alternative shape of extrudable material 1 5b is shown having internally directed flanges 16,17 and 18. Such an arrangment requires a die having a modified inlet arrangement which is not illustrated. On entry of this material 1 5b into the respective die a slit 19 is formed between the respective ends 20,21 which are initially adjacent. An isometric view of the extrusion obtained on exit from the die is shown in
Figure 10. The ends 20,21 have been separated asfar as possible and in both embodiments the crosssections of the resulting extrusions is predominantly linear. The arrangement of Figure 10 mayfind application as, for example, a skirting board to house electrical socketryand conceal wiring.
Although fine-particle sized cementitious-based material (having an average particle size of less than 1 mm, preferably less than 0.1 mm) is preferred as an extrudable material because of economics, capability of extrusion and the strength of the extruded products when set this is not the only material useful in this invention.
Other extrudable materials include, for example, wood chip/glue composition e.g. as currently used in paper or cardboard manufacture, plastics materials, aluminium, aluminium alloy,iron or steel alloys, fibre glass, carbon-fibre orotherwise reinforced glass fibre, Ke lar (trade mark) or glass. When employing the metals/alloys the forming bloc should be modified to include heating means to keep the material semi-rigid and means to assist travel of the material through the die apparatus such as powered rollers pulling, carrying or otherwise supporting thefed material. Forthe alloys it would be desirable to use a die of material having a high temperature melting point. When using glass careful temperature control will be required to impart shatter resistance to the extruded products.
In the embodiments of the invention which are not illustrated (1) the final cross-section of the extrusion is wholly linear and (2) the initial cross-section may comprise a convoluted form to allow for extra length in the extruded material leaving the exit. The extrudable material compounder may in the former arrangement be adapted to present a hollow or solid cylinderfor entry into the die apparatus. Whatevertye or shape of extrusion leaves the exit of the die may be further processed as required or moulded to form a double-skinned shape.
The end uses of extrusions obtained by means of the present invention are widely varied. For example only, such extrusions may find applications in the construction of skirting boards, cabinets, doors or door frames, interior or exteriorwalls, floors, pipes, even buildings and road surfaces, amongst many others.
Claims (16)
1. A method of forming an extrudable material into a secondary shape of part or predominantly linear cross-section from a primary shape of predominantly non-linear cross-section which comprises passing extrudable material through a contoured die wherein a slit is made in the materialtoform two initially adjacent ends which are separated on passage through the die as the material is formed abouta forming blocktowardsanexitofpartorpredominant- ly linear cross-section.
2. A method as claimed in claim 1, wherein the extrudable material comprises an hydraulic cement composition.
3. A method as claimed in claim 2, wherein the particle size of the cement is less than 1 mm, preferably lessthan 0.1 mm.
4. A method as claimed in claim 1, wherein the extrudable material comprises one of: wood-chip/ glue composition, plastics, aluminium, aluminium alloy, iron or steel alloy, fibre glass, carbon-fibre or otherwise reinforced glass fibre, Kevlar(trade mark) or glass.
5. A method as claimed in any preceding claim, wherein material is supplied to the die from atwin screw compounder preferably having a variable orifice.
6. Die apparatus, useful in a method as claimed in any preceding claim, comprising an inlet of predominantly non-linear cross-section, a forming blockextending through the whole or part of the die, an exit of part or predominantly linear cross-section and slitting means capable of forming a slit in extrudable material passed through the inlet.
7. Apparatus as claimed in claim 6, in two-part form defining, when assembled, a passage for extrudable material.
8. Apparatus as claimed inclaim6or7,wherein the inlet profile is substantially circular and hollow and/orthe exit profile substantially linear.
9. Apparatus as claimed in any one of claims 6to 8,wherein the slitting means forms part of theforming block.
10. Apparatus as claimed in any one of claims 6 to 9, wherein the slitting means comprise a wedge having a tapered leading edge.
11. Apparatus as claimed in anyone of claims 6to 10, coupled to a twin-screw compounder preferably having a variable orifice.
12. A method as claimed in any one of claims 1 to 5, utilising a die apparatus as claimed in any one of claims 6to 11.
13. A method as claimed in claim 12, wherein the material leaving the exit of the die is in the form of a skirting board for housing wiring and/or piping.
14. Extruded material obtained from a method as claimed in any one of claims 1 to 5, orfrom apparatus as claimed in any one of claims 6 to 11.
15. A method of forming an extrudable material substantially as herein described with reference to and as illustrated in any ofthe accompanying drawings.
16. Die apparatus substantially as herein de scribedwith reference to and as illustrated in any of the accompanying drawings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8613025A GB2177044B (en) | 1985-05-29 | 1986-05-29 | Method and apparatus for extrusion |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB858513451A GB8513451D0 (en) | 1985-05-29 | 1985-05-29 | Extruded skirting board |
| GB858513452A GB8513452D0 (en) | 1985-05-29 | 1985-05-29 | Double sided board |
| GB858530399A GB8530399D0 (en) | 1985-05-29 | 1985-12-10 | Extrusion |
| GB8613025A GB2177044B (en) | 1985-05-29 | 1986-05-29 | Method and apparatus for extrusion |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB8613025D0 GB8613025D0 (en) | 1986-07-02 |
| GB2177044A true GB2177044A (en) | 1987-01-14 |
| GB2177044B GB2177044B (en) | 1989-10-11 |
Family
ID=27449664
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8613025A Expired GB2177044B (en) | 1985-05-29 | 1986-05-29 | Method and apparatus for extrusion |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2177044B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6615534B1 (en) | 1997-03-18 | 2003-09-09 | Cytec Canada, Inc. | Gas fumigation method and system |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2498900C1 (en) * | 2012-07-13 | 2013-11-20 | Лев Анатольевич Губенко | Method of forming long-length sheets from plasticised materials and device to this end |
| CN110466134B (en) * | 2019-06-26 | 2024-01-26 | 安徽高创光电通信技术有限公司 | Fiber paste bubble removing device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB621796A (en) * | 1942-07-22 | 1949-04-20 | Lavorazione Mat Plast | Improvements in or relating to the manufacture of sheets, bands, strips and the likeof thermoplastic materials |
| GB628467A (en) * | 1943-04-03 | 1949-08-30 | Lavorazione Mat Plast | Improvements in or relating to moulding plastic materials by extrusion |
| GB993397A (en) * | 1963-03-26 | 1965-05-26 | Hugo Stinnes Persoenlich Gmbh | Improvements in extrusion dies |
| GB1081562A (en) * | 1964-06-30 | 1967-08-31 | Cie Des Atelliers Et Forges De | Method of producing slabs, sheets and films of thermoplastic material, and to a device therefor |
| GB1343816A (en) * | 1970-04-23 | 1974-01-16 | Ibm | Crosshead extrusion die |
| GB1388970A (en) * | 1972-05-24 | 1975-04-03 | Steelastic Co | Method of and apparatus for producing reinforced fabrc |
| GB1408039A (en) * | 1972-09-26 | 1975-10-15 | Takiron Co | Process and apparatus for continuously producing a sheet of a thermoplastic synthetic resin |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4189293A (en) * | 1978-03-30 | 1980-02-19 | Uniroyal, Inc. | Extrusion head |
-
1986
- 1986-05-29 GB GB8613025A patent/GB2177044B/en not_active Expired
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB621796A (en) * | 1942-07-22 | 1949-04-20 | Lavorazione Mat Plast | Improvements in or relating to the manufacture of sheets, bands, strips and the likeof thermoplastic materials |
| GB628467A (en) * | 1943-04-03 | 1949-08-30 | Lavorazione Mat Plast | Improvements in or relating to moulding plastic materials by extrusion |
| GB993397A (en) * | 1963-03-26 | 1965-05-26 | Hugo Stinnes Persoenlich Gmbh | Improvements in extrusion dies |
| GB1081562A (en) * | 1964-06-30 | 1967-08-31 | Cie Des Atelliers Et Forges De | Method of producing slabs, sheets and films of thermoplastic material, and to a device therefor |
| GB1343816A (en) * | 1970-04-23 | 1974-01-16 | Ibm | Crosshead extrusion die |
| GB1388970A (en) * | 1972-05-24 | 1975-04-03 | Steelastic Co | Method of and apparatus for producing reinforced fabrc |
| GB1408039A (en) * | 1972-09-26 | 1975-10-15 | Takiron Co | Process and apparatus for continuously producing a sheet of a thermoplastic synthetic resin |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6615534B1 (en) | 1997-03-18 | 2003-09-09 | Cytec Canada, Inc. | Gas fumigation method and system |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2177044B (en) | 1989-10-11 |
| GB8613025D0 (en) | 1986-07-02 |
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Effective date: 19920529 |