GB1397652A - Production of composite films - Google Patents

Production of composite films

Info

Publication number
GB1397652A
GB1397652A GB79573A GB79573A GB1397652A GB 1397652 A GB1397652 A GB 1397652A GB 79573 A GB79573 A GB 79573A GB 79573 A GB79573 A GB 79573A GB 1397652 A GB1397652 A GB 1397652A
Authority
GB
United Kingdom
Prior art keywords
polymer
channels
die
films
partitions
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
Application number
GB79573A
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.)
Cellophane SA France
Original Assignee
Cellophane SA France
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.)
Filing date
Publication date
Priority claimed from FR7200709A external-priority patent/FR2167229B1/fr
Priority claimed from FR7217765A external-priority patent/FR2184468B2/fr
Application filed by Cellophane SA France filed Critical Cellophane SA France
Publication of GB1397652A publication Critical patent/GB1397652A/en
Expired legal-status Critical Current

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
    • B29C48/03—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
    • 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
    • B29C48/16—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
    • B29C48/19—Articles comprising two or more components, e.g. co-extruded layers the components being layers the layers being joined at their edges
    • 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
    • B29C48/21—Articles comprising two or more components, e.g. co-extruded layers the components being layers the layers being joined at their surfaces
    • 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
    • B29C48/307—Extrusion nozzles or dies having a wide opening, e.g. for forming sheets specially adapted for bringing together components, e.g. melts within the die
    • 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
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/49—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using two or more extruders to feed one die or nozzle

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

1397652 Composite films LA CELLOPHANE 5 Jan 1973 [11 Jan 1972 18 May 1972] 795/73 Heading B5B Apparatus for the production of composite films by co-extruding liquid film-forming compositions through a flat extrusion die comprises a chamber behind the die 1 and a cylindrical feed pipe 2 leading into the chamber in which feed pipe is fitted a flow regulating device comprising a partition 6 mounted on a member 7 so as to be freely rotatable about the axis of the pipe so enabling the angle between the plane of the partition and that of the die to be altered, and hence the angle of the plane of separation of the polymer compositions supplied via channels A and B. Fig. 6A (not shown) shows the partition (6) end-on. According to the orientation given to it, member (7) can be given any position between the two extremes shown in broken lines. Fig. 7 shows a device comprising two partitions 6 and provided with an extra feed channel C and Fig. 8 (not shown) a device with three partitions and two extra feed channels. The apparatus of Fig. 14 utilizes two of the flowregulating devices in series, each being independently rotatable so that each can be oriented both relative to the other and to the lips of the die, and so arranged that the flow from the upstream device may pass either into the middle region or into the side regions of the downstream device. This enables both laminated and juxtaposed films to be obtained, and films which may be laminated and over only part of their width or even not at all. Edge portions of a film may be made of lower grade polymer, or contain recovered waste material. Polymer melts B and C are supplied via side channels 12 and 13 and polymer melt A via a central channel 14 located in rotatable member 15. (For clarity the part of the device above the broken lines has been turned through 90 degrees so that channels 12 and 13 are seen in profile.) Alternatively, four polymer melts may be supplied using a device of the form of Fig. 8 (not shown). Threaded ring 27 connects this device to a similar device consisting of a cylindrical body 28 provided with partitions 19 which can be rotated inside cylindrical body 20, which is attached by threaded ring 24 to feed pipe 21 leading to the extrusion nozzle. A polymer melt D, intended to form the edges of the film, or alternatively two melts D and E, are supplied through side channels 22 and 23, and distribute themselves on either side of the composite melt of the polymers A, B and C.
GB79573A 1972-01-11 1973-01-05 Production of composite films Expired GB1397652A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7200709A FR2167229B1 (en) 1972-01-11 1972-01-11
FR7217765A FR2184468B2 (en) 1972-05-18 1972-05-18

Publications (1)

Publication Number Publication Date
GB1397652A true GB1397652A (en) 1975-06-18

Family

ID=26216829

Family Applications (1)

Application Number Title Priority Date Filing Date
GB79573A Expired GB1397652A (en) 1972-01-11 1973-01-05 Production of composite films

Country Status (11)

Country Link
JP (1) JPS5315546B2 (en)
BE (1) BE793756A (en)
CA (1) CA1015913A (en)
CH (1) CH566202A5 (en)
DE (1) DE2301117C3 (en)
DK (1) DK145256C (en)
GB (1) GB1397652A (en)
IT (1) IT974352B (en)
LU (1) LU66812A1 (en)
NL (1) NL153801B (en)
SE (1) SE420692B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1795326A1 (en) * 2004-09-30 2007-06-13 Toray Industries, Inc. Apparatus and method for manufacturing laminated sheet
EP2658715A4 (en) * 2010-12-31 2017-05-03 Kimberly-Clark Worldwide, Inc. Segmented films with high strength seams
US10081123B2 (en) 2010-12-31 2018-09-25 Kimberly-Clark Worldwide, Inc. Segmented films with high strength seams

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3239782C2 (en) * 1982-10-27 1985-01-31 Dynamit Nobel Ag, 5210 Troisdorf Device for coextruding a film with a color wedge made of an uncolored thermoplastic material
JPS5975015U (en) * 1982-11-12 1984-05-22 株式会社吉野工業所 Synthetic resin tube
CN111241688B (en) * 2020-01-15 2023-08-25 北京百度网讯科技有限公司 Method and device for monitoring composite production process

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3473193A (en) * 1967-01-03 1969-10-21 Nat Distillers Chem Corp Reciprocating multi-orificed internal die diverter
US3477099A (en) * 1967-12-21 1969-11-11 Dow Chemical Co Extrusion apparatus

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1795326A1 (en) * 2004-09-30 2007-06-13 Toray Industries, Inc. Apparatus and method for manufacturing laminated sheet
EP1795326A4 (en) * 2004-09-30 2011-10-19 Toray Industries Apparatus and method for manufacturing laminated sheet
KR101213122B1 (en) * 2004-09-30 2012-12-17 도레이 카부시키가이샤 Apparatus and method for manufacturing laminated sheet
EP2658715A4 (en) * 2010-12-31 2017-05-03 Kimberly-Clark Worldwide, Inc. Segmented films with high strength seams
US10081123B2 (en) 2010-12-31 2018-09-25 Kimberly-Clark Worldwide, Inc. Segmented films with high strength seams

Also Published As

Publication number Publication date
CH566202A5 (en) 1975-09-15
CA1015913A (en) 1977-08-23
DE2301117A1 (en) 1973-07-19
DK145256C (en) 1983-03-14
NL153801B (en) 1977-07-15
DE2301117B2 (en) 1978-03-02
LU66812A1 (en) 1973-03-19
DK145256B (en) 1982-10-18
JPS5315546B2 (en) 1978-05-25
BE793756A (en) 1973-05-02
SE420692B (en) 1981-10-26
DE2301117C3 (en) 1978-10-26
NL7300359A (en) 1973-07-13
IT974352B (en) 1974-06-20
JPS4879256A (en) 1973-10-24

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee