GB1221781A - Extruded sheet materials and their production - Google Patents
Extruded sheet materials and their productionInfo
- Publication number
- GB1221781A GB1221781A GB58917/67A GB5891767A GB1221781A GB 1221781 A GB1221781 A GB 1221781A GB 58917/67 A GB58917/67 A GB 58917/67A GB 5891767 A GB5891767 A GB 5891767A GB 1221781 A GB1221781 A GB 1221781A
- Authority
- GB
- United Kingdom
- Prior art keywords
- lamellae
- polymeric material
- orifices
- collecting chamber
- surface layer
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
- B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
-
- 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
- B29C48/0018—Combinations of extrusion moulding with other shaping operations combined with shaping by orienting, stretching or shrinking, e.g. film blowing
-
- 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
- B29C48/0019—Combinations of extrusion moulding with other shaping operations combined with shaping by flattening, folding or bending
-
- 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
- B29C48/0022—Combinations of extrusion moulding with other shaping operations combined with cutting
-
- 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
- B29C48/05—Filamentary, e.g. strands
-
- 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
- B29C48/08—Flat, e.g. panels flexible, e.g. films
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
1,221,781. Extruded sheets of polymeric material. O.-B. RASMUSSEN. 29 Dec., 1967 [30 Dec., 1966], No. 58917/67. Divided out of 1,212,682. Heading B5B. An extruded sheet material (such as a selfsupporting film) of organic polymeric material has a disrupted layer and a continuous surface layer and a continuous surface layer on at least one surface comprising thin lamellae of a first polymeric material, the lamellae being arranged so that a portion of each is situated in a layer of the sheet where there are no connections or only disrupted connections to adjacent portions of the adjacent lamellae of the first polymeric material, whereas a substantial portion at least of the lamellae forms part of the surface layer, the surface layer consisting at any point of a large number of film formed lamellae portions laying one upon another in overlapping sandwich-like arrangement, adjacent lamellae portions in the surface layer being in intimate adherence with one another. The sheet material may have lamellae of a second polymeric material extending across the disrupted layers of the sheet and in interspersed relationship with the lamellae of the first polymeric material, the lamellae of the second polymeric material forming zones of disruption between the lamellae of the first polymeric material, the surface layer or layers being devoid of the second polymeric material. The sheet material may be made by feeding a molten first extrudable polymeric material to a multitude of first orifices opening into a collecting chamber of elongated crosssection having an outlet slot along its length, and distributed over the longitudinal dimension of the said cross-section, feeding a second extrudable material to a multitude of second orifices likewise opening into the collecting chamber and distributed over the longitudinal dimension of the cross-section thereof, the first orifices alternating with the second orifices and extending further towards at least one side of the collecting chamber than the second orifices, extruding the materials through the orifices into the collecting chamber in the form of interspersed streams, collecting the streams into the collecting chamber to form a liquid material comprising interspersed lamellae of the first and second materials, moving at least one of the walls of the collecting chamber relatively to the orifices transversely to the direction of extrusion and thereby exerting a transverse shearing effect on the lamellae during their forward travel in the direction of extrusion towards the exit slot, and disrupting the structural connections between the lamellae of the first material that are formed by the lamellae of the second material while the lamellae are either in the liquid, semi-liquid or solid state. The collecting chamber may be moved relatively to the orifices. One side of the collecting chamber may be moved relatively to the other side. The collecting chamber may narrow down in the direction of extrusion to a wide flat nozzle from which the composite structure is finally extruded and subsequently solidified by cooling. The orifices may be arranged in a circular row and the collecting chamber may be a corresponding circular collecting chamber and the collecting chamber may be rotated relative to the row. The shear may be exerted on the sides of the lamellae as they pass through the chamber as a result of their having to pass through a neck the width of which is substantially less than the length of the longest orifices. The orifices may be closely spaced elongated parallel slots forming an angle with the direction of the row. The second polymeric material may be foamed during or after the hand-off from the extruder device. The second polymeric material or the interphases between the first and second polymeric materials may be disrupted by drawing or bending. The second polymeric material may be removed at least partly by means of a solvent or by brushing.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB58917/67A GB1221781A (en) | 1966-12-30 | 1966-12-30 | Extruded sheet materials and their production |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB58917/67A GB1221781A (en) | 1966-12-30 | 1966-12-30 | Extruded sheet materials and their production |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1221781A true GB1221781A (en) | 1971-02-10 |
Family
ID=10482684
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB58917/67A Expired GB1221781A (en) | 1966-12-30 | 1966-12-30 | Extruded sheet materials and their production |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1221781A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113543956A (en) * | 2019-03-21 | 2021-10-22 | 克劳斯马菲技术有限公司 | Lamination block with continuously varying lamination width |
-
1966
- 1966-12-30 GB GB58917/67A patent/GB1221781A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113543956A (en) * | 2019-03-21 | 2021-10-22 | 克劳斯马菲技术有限公司 | Lamination block with continuously varying lamination width |
CN113543956B (en) * | 2019-03-21 | 2023-07-25 | 克劳斯马菲技术有限公司 | Lamination block with continuously variable lamination width |
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