GB1221781A – Extruded sheet materials and their production
– Google Patents
GB1221781A – Extruded sheet materials and their production
– Google Patents
Extruded sheet materials and their production
Info
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
1966-12-30
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
Application number
GB58917/67A
Inventor
Ole-Bendt Rasmussen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
1966-12-30
Filing date
1966-12-30
Publication date
1971-02-10
1966-12-30
Application filed by Individual
filed
Critical
Individual
1966-12-30
Priority to GB58917/67A
priority
Critical
patent/GB1221781A/en
1971-02-10
Publication of GB1221781A
publication
Critical
patent/GB1221781A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
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
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.
GB58917/67A
1966-12-30
1966-12-30
Extruded sheet materials and their production
Expired
GB1221781A
(en)
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)
* Cited by examiner, † Cited by third party
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)
* Cited by examiner, † Cited by third party
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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