FR2424808A1 - Automatically controlling thickness of covered foam plastic sheeting - using ultrasonic impulses distributed across width to control foam feed and conveyor speed - Google Patents

Automatically controlling thickness of covered foam plastic sheeting - using ultrasonic impulses distributed across width to control foam feed and conveyor speed

Info

Publication number
FR2424808A1
FR2424808A1 FR7911333A FR7911333A FR2424808A1 FR 2424808 A1 FR2424808 A1 FR 2424808A1 FR 7911333 A FR7911333 A FR 7911333A FR 7911333 A FR7911333 A FR 7911333A FR 2424808 A1 FR2424808 A1 FR 2424808A1
Authority
FR
France
Prior art keywords
foam
plastic sheeting
width
automatically controlling
conveyor speed
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
Application number
FR7911333A
Other languages
French (fr)
Other versions
FR2424808B3 (en
Inventor
Joseph Kowallik
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.)
Hoesch Werke AG
Original Assignee
Hoesch Werke AG
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
Application filed by Hoesch Werke AG filed Critical Hoesch Werke AG
Publication of FR2424808A1 publication Critical patent/FR2424808A1/en
Application granted granted Critical
Publication of FR2424808B3 publication Critical patent/FR2424808B3/fr
Granted 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
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34—Auxiliary operations
    • B29C44/36—Feeding the material to be shaped
    • B29C44/46—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length
    • B29C44/50—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length using pressure difference, e.g. by extrusion or by spraying
    • B29C44/52—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length using pressure difference, e.g. by extrusion or by spraying between moving 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
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34—Auxiliary operations
    • B29C44/60—Measuring, controlling or regulating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2007/00—Flat articles, e.g. films or sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2009/00—Layered products

Landscapes

  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)

Abstract

Foamed plastic sheeting with >=1 cover layer is produced continuously, the foam is prepared and injected between conveyor belts and is monitored without physical contact, and the machine is regulated in speed and foaming rate accordingly. The monitoring system has a number of individual measuring points across the whole width fed in, and they measure the foam thickness. The machine automatically monitors right across the direction of production and maintains uniform foam distribution over the section of the sheeting.
FR7911333A 1978-05-05 1979-05-04 Automatically controlling thickness of covered foam plastic sheeting - using ultrasonic impulses distributed across width to control foam feed and conveyor speed Granted FR2424808A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2819709A DE2819709C2 (en) 1978-05-05 1978-05-05 Method and device for the continuous production of foam sheets, in particular provided with at least one cover layer

Publications (2)

Publication Number Publication Date
FR2424808A1 true FR2424808A1 (en) 1979-11-30
FR2424808B3 FR2424808B3 (en) 1982-03-26

Family

ID=6038726

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7911333A Granted FR2424808A1 (en) 1978-05-05 1979-05-04 Automatically controlling thickness of covered foam plastic sheeting - using ultrasonic impulses distributed across width to control foam feed and conveyor speed

Country Status (4)

Country Link
DE (1) DE2819709C2 (en)
FR (1) FR2424808A1 (en)
IT (1) IT1116464B (en)
SE (1) SE434242B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1683618A3 (en) * 2005-01-25 2007-11-07 Bayer MaterialScience AG Method and apparatus for optimised continuous production of slabstock foam
WO2015028556A1 (en) * 2013-08-28 2015-03-05 Kuchenmeister Gmbh Method and device for the process control of a plant for the continuous production of foams

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10237005A1 (en) * 2002-08-13 2004-02-26 Bayer Ag Soft foam is produced by determining the height of the foam along an advancing line, comparing it to a reference value, and using the difference to control any adjustment
DE102004059724A1 (en) 2004-12-11 2006-06-14 Bayer Materialscience Ag Process and plant for producing foam in a continuous foam process
DE102005010999A1 (en) 2005-03-10 2006-09-14 Bayer Materialscience Ag Process and plant for the continuous production of foam boards

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1683618A3 (en) * 2005-01-25 2007-11-07 Bayer MaterialScience AG Method and apparatus for optimised continuous production of slabstock foam
US7645809B2 (en) 2005-01-25 2010-01-12 Bayer Materialscience Ag Process and apparatus for the optimized production of foam in a continuous block slabstock process
WO2015028556A1 (en) * 2013-08-28 2015-03-05 Kuchenmeister Gmbh Method and device for the process control of a plant for the continuous production of foams

Also Published As

Publication number Publication date
DE2819709B1 (en) 1979-10-31
SE434242B (en) 1984-07-16
IT1116464B (en) 1986-02-10
FR2424808B3 (en) 1982-03-26
SE7901805L (en) 1979-11-06
IT7948902A0 (en) 1979-05-02
DE2819709C2 (en) 1980-07-10

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