GB2218040A - A method and apparatus for continuously laminating together foamed and high-density plastics films - Google Patents

A method and apparatus for continuously laminating together foamed and high-density plastics films Download PDF

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Publication number
GB2218040A
GB2218040A GB8905825A GB8905825A GB2218040A GB 2218040 A GB2218040 A GB 2218040A GB 8905825 A GB8905825 A GB 8905825A GB 8905825 A GB8905825 A GB 8905825A GB 2218040 A GB2218040 A GB 2218040A
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GB
United Kingdom
Prior art keywords
web
lamination
temperature
foamed
density
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.)
Withdrawn
Application number
GB8905825A
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GB8905825D0 (en
Inventor
Klaus-Dieter Kolossow
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.)
KraussMaffei Berstorff GmbH
Original Assignee
Hermann Berstorff Maschinenbau GmbH
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 Hermann Berstorff Maschinenbau GmbH filed Critical Hermann Berstorff Maschinenbau GmbH
Publication of GB8905825D0 publication Critical patent/GB8905825D0/en
Publication of GB2218040A publication Critical patent/GB2218040A/en
Withdrawn legal-status Critical Current

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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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/065—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of foam
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/02—Preparation of the material, in the area to be joined, prior to joining or welding
    • B29C66/024—Thermal pre-treatments
    • B29C66/0242—Heating, or preheating, e.g. drying
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
    • B29C66/727—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being porous, e.g. foam
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/834—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools moving with the parts to be joined
    • B29C66/8341—Roller, cylinder or drum types; Band or belt types; Ball types
    • B29C66/83411—Roller, cylinder or drum types
    • B29C66/83413—Roller, cylinder or drum types cooperating rollers, cylinders or drums
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/914—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
    • B29C66/9141—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature
    • B29C66/91411—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature of the parts to be joined, e.g. the joining process taking the temperature of the parts to be joined into account
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/914—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
    • B29C66/9141—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature
    • B29C66/91441—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature the temperature being non-constant over time
    • B29C66/91443—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature the temperature being non-constant over time following a temperature-time profile
    • B29C66/91445—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature the temperature being non-constant over time following a temperature-time profile by steps
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/919—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges
    • B29C66/9192—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges in explicit relation to another variable, e.g. temperature diagrams
    • B29C66/91921—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges in explicit relation to another variable, e.g. temperature diagrams in explicit relation to another temperature, e.g. to the softening temperature or softening point, to the thermal degradation temperature or to the ambient temperature
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/919—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges
    • B29C66/9192—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges in explicit relation to another variable, e.g. temperature diagrams
    • B29C66/91921—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges in explicit relation to another variable, e.g. temperature diagrams in explicit relation to another temperature, e.g. to the softening temperature or softening point, to the thermal degradation temperature or to the ambient temperature
    • B29C66/91931—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges in explicit relation to another variable, e.g. temperature diagrams in explicit relation to another temperature, e.g. to the softening temperature or softening point, to the thermal degradation temperature or to the ambient temperature in explicit relation to the fusion temperature or melting point of the material of one of the parts to be joined
    • B29C66/91935—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges in explicit relation to another variable, e.g. temperature diagrams in explicit relation to another temperature, e.g. to the softening temperature or softening point, to the thermal degradation temperature or to the ambient temperature in explicit relation to the fusion temperature or melting point of the material of one of the parts to be joined lower than said fusion temperature
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/93—Measuring or controlling the joining process by measuring or controlling the speed
    • B29C66/934—Measuring or controlling the joining process by measuring or controlling the speed by controlling or regulating the speed
    • B29C66/93431—Measuring or controlling the joining process by measuring or controlling the speed by controlling or regulating the speed the speed being kept constant over time
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/94—Measuring or controlling the joining process by measuring or controlling the time
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/302—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising aromatic vinyl (co)polymers, e.g. styrenic (co)polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/04—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the partial melting of at least one layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/18—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer of foamed material
    • 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/45—Joining of substantially the whole surface of the articles
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/914—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
    • B29C66/9141—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature
    • B29C66/91421—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature of the joining tools
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/914—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
    • B29C66/9141—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature
    • B29C66/91431—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature the temperature being kept constant over time
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2025/00—Use of polymers of vinyl-aromatic compounds or derivatives thereof as moulding material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/04—Condition, form or state of moulded material or of the material to be shaped cellular or porous
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/40—Symmetrical or sandwich layers, e.g. ABA, ABCBA, ABCCBA
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2266/00—Composition of foam
    • B32B2266/02—Organic
    • B32B2266/0214—Materials belonging to B32B27/00
    • B32B2266/0221—Vinyl resin
    • B32B2266/0228—Aromatic vinyl resin, e.g. styrenic (co)polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2309/00—Parameters for the laminating or treatment process; Apparatus details
    • B32B2309/14—Velocity, e.g. feed speeds

Description

1 1 Z / 1 8040
TITLE OF THE INVENTION
A METHOD AND APPARATUS FOR CONTINOUSLY LAMINATING TOGETHER FOAMED AND HIGH-DENSITY PLASTICS FILMS FIELD OF THE INVENTION
The present invention relates to a method of laminating together foamed and high-density plastics films. More particularly, the present invention relates to a method in which the high density film or films are continuously heated to a temperature just below their fusion temperatures and the foamed film is continuously heated to a temperature just below that at which the foamed structure is destroyed. The films are then jointly passed through a nip defined between two rollers, the temperature of which rollers is controlled. The present invention also relates to an apparatus which is capable of carrying out such a method.
BACKGROUND OF THE INVENTION AND PRIOR ART DISCUSSION
A lamination method is described in United States Patent Specification No. 3,220,9002. In such known method, a foamed film is extruded through a wide-slotted nozzle or a fishtail die and is laminated in a roller nip, with a high-density film which has also been extruded through a wideslotted nozzle. The film laminate is subsequently further
1 heated and is then supplied to an automatic deepdrawing device for manufacturing drinking cups.
The films which are to be laminated together are heated by a heater device located immediately upstream of the lamination gap between the two rollers. This is effected so as to supply more heat to the extruded films to effect a satisfactory laminating operation.
In order to provide a continuous coating operation without using an adhesive or a solvent, it is of paramount importance that high-density film, which must be able to withstand relatively strong heating without being damaged, is retained in the roller nip in an exact manner and the temperature thereof must lie within a narrow range whilst the laminating operation with a foamed film is effected. It is also necessary for the foamed film to be heated very carefully only on the side thereof which is to be laminated with the high-density film. This is because the gas present in the small foam bubbles would cause the foam to burst due to expansion. The entire foam structure of the film would thus collapse.
For this reason. the foamed web must be guided in a very exact manner in respect of its temperature. The high-density film may therefore have a relatively high temperature which does not damage the film itself but which when brought into contact with the foamed film; causes the bubbles on the upper surface of the film to burst during the 5, 14- 1 1 i --3 lamination operation. The result of this is that the lamination operation causes a partial destruction of the foam.
OBJECTS OF THE INVENTION The present invention seeks to provide a method, and an apparatus which is suitable for effecting the method, for achieving accurate and continuous lamination together of a high-density film with a foamed film web without causing damage to the foamed web.
In a subsidiary aspect, the present invention seeks to provide a lamination method which can be effected using high-density films or different thicknesses and using films having differing coefficients of thermal conductivity.
SUMMARY OF THE INVENTION
According to the present inventiong there is provided a method of continuously laminating together a web of foamed-plastics material with at least one unfoamed web of high-density plastics material comprising the steps of continuously heating the high-density film web to a temperature just below its fusion temperature and continuously heating the foamed web to a temperature just below the temperature at which the foam collapses and effecting the lamination of the webs in a nip defined between temperature-controlled constant-speed lamination rollers, wherein the dwell time during which the high- k density film remains in contact with the heated lamination roller prior to reaching the lamination nip is regulated.
Also according to the present invention, there is provided an apparatus for laminating together a web of foamed plastics material with at least one unfoamed web of high-den.sity plastics material comprising a pair of constant-speed heated lamination rollers defining a lamination nip therebetween, at least one guide roller being provided for each web of high-density plastic material which guide roller is disposed with its axis extending substantially horizontally, upstream of the lamination nip but offset vertically with respect to the web of foamed plastics material, which foamed material is fed directly into the lamination nip, each guide roller guiding high-density plastics material film into the lamination nip and being vertically and/or horizontally displaceable in such a manner as to remain parallel to the lamination nip.
By regulating the period during which the high-density film remains in contact the heated laminating roller, the temperature such film can be controlled exactly, irrespective of the thickness or coefficient of thermal conductivity thereof. Both parameters are specifically taken into account. For example, if a thick film having a low coefficient of thermal conductivity is being used the film is maintained in contact with the heated lamination roller for a longer period of time than would be the case if a thin film was being employed. Such consideration must, however, also take into account it A V the temperature at which the foamed web of plastics material collapses.
The period during which the high-density film remains in contact with the heated lamination roller may be regulated by vertically adjusting a guide roller for such film. This varies the position at which the high-density film encounters the periphery of the heated lamination roller and hence determines the length of time during which the film remains in contact with such roller before it is laminated with the foamed film in the nip between the two lamination rollers.
The guide roller, which is disposed axially parallel to the lamination nip is vertically adjustable by known means in such a manner that the axes of the guide roller and the particular lamination roller associated therewith always extend parallel to one another in order to prevent the highdensity film from becoming creased.
The adjustment of the pressure roller may be effected utilising known pneumatic or hydraulic piston and cylinder arrangements which engage with both bearings of the roller, or even by means of a simple rack and pinion arrangement which accelerates or retards both bearing bodies.
BRIEF DESCRIPTION OF THE DRAWING is One embodiment of a laminating apparatus in accordance with the present invention and which is particularly suitable for carrying out the method of the present invention will be further described, by way of example, with reference to the accompanying drawing, the single Figure of which shows, ill schematically, a side elevational view of the apparatus.
DESCRIPTION OF PREFERRED EMBODIMENT
In the drawing, there are shown two constant speed heated rollers 1 and 2, between which a nip 3 is defined. A web of foamed polystyrene 4 is passed through the nip 3, and as it does so, is to be coated, on each of its major surfaces with a web of high density polystyrene 5 and 6 to form a laminated structure. For this purpose, a previously extruded web of high-density polystyrene 6 is guided over an upper guide roller 7 and is fed to the roller 1. The web 6 encounters the roller 1 at point 8 and is caused to pass around approximately one-ninth of the periphery of such roller before it encounters the web 4 in the nip 3. In other words, the angle subtended by a line joining the nip 3 to the point 8 at the centre of the roller 1 is approximately 400. By so doing, the web 6 remains on the roller for a predetermined length of time which is dependent upon the circumferential speed of the roller 1.
-1 - 7 If, for example, the period during which the film 6 remains on the roller 1 needs to be extended, the guide roller 7 is mounted so as to be vertically displaceable in the directions of the double-headed arrow 9, for example into the position 10 shown in dotted lines. By so doing, the film 6 initially contacts the roller 1 at point 11 and will remain in contact with such roller 1 for almost twice as long than if such initial contact was at point 8. This is, of course, assuming that the roller 1 has an identical circumferential speed in each instance.
The coating rollers 1 and 2 may, for is example. each have a temperature of substantially 1450C, and the high-density film 6, which is usually approximately 0.1 mm thick2 will in such circumstances, attain a maximum temperature of substantially 1350C in the nip 3.
Good lamination is achieved if the foamed web 4 is heated by a heating device 12 to a temperature of 400C prior to being introduced into the nip 3. The high-density films 5 and 6, which are to be laminated onto the web 4 usually are at a temperature of substantially 200C prior to encountering the points 11 and lla respectively.
The temperature of the films 5 and 6 increases to substantially 1000C as a result of being in contact with the coating rollers 1 and 2 through an angle of substantially 900. The coating operation is thus effected in the nip 3 at a temperature of substantially 1300C.
8 - The bonding between the high-density films. 5 and 6 and the foamed web 4 was tested. Such test revealed that the bonding could not be broken without destroying the webs 5 and 6.
The guide roller 7 may also be heated.
This feature can either be used to assist in determined how long the film needs to remain in contact with the coating rollers, or it can be utilised merely to accelerate the heating operation.
The period during which the high-density films 5 and 6 remain in contact with the coating rollers 1 and 2 is selected in dependence upon the is type of high-density film, the thickness of the film and the particular coefficients of thermal conductivity of the materials.
The temperature at which the foamed web 20 collapses is also significant and must be taken into account if satisfactory bonding is to be achieved.
1 i

Claims (4)

  1. CLAIMS is 1. A method of continuously together a web of foamed plastics
    material with at least one unfoamed web of high-density plastics material comprising the steps of continuously heating the high-density film web to a temperature just below its fusion temperature and continuously heating the foamed web to a temperature just below the temperature at which the foam collapses and effecting the lamination of the webs in a nip defined between temperature-controlled constant-speed lamination rollers, wherein the dwell time during which the high-density film remains in contact with the heated lamination roller prior to reaching the lamination nip is regulated.
    laminating
  2. 2. A method as claimed in claim 1 substantially as hereinbefore described.
  3. 3. An apparatus for laminating together a web of foamed plastics material with at least one unfoamed web of high-density plastics material comprising a pair of constant-speed heated lamination rollers defining a lamination nip therebetween, at least one guide roller being provided for each web of high-density plastics material. which guide roller is disposed with its axis extending substantially horizontallyg upstream of the lamination nip but offset vertically with respect to the web of foamed plastics material, which foamed material is fed directly into the lamination nip, each guide roller guiding a high-density plastics material film into 0 the lamination nip and being vertically and/or horizontally displaceable in such a manner as to remain parallel to the lamination nip.
  4. 4. An apparatus as claimed in claim 3, wherein the temperature of each guide roller is controllable.
    An apparatus as claimed in claim 3 constructed and arranged to operate substantially as hereinbefore described with reference to the accompanying drawing.
    is I Published 1989 atThe Patent Office. State House. 66,71 HighHofficrn, London WC;lR4TP. Furthercopies maybe obtainedfroin The Patent Office. Sales Branch, St Mary Cray, Orpington. Kent BR5 =. Printed by Mliltiplex techniques ltd, St Mary Cray. Kent. Con. 1/87
GB8905825A 1988-04-21 1989-03-14 A method and apparatus for continuously laminating together foamed and high-density plastics films Withdrawn GB2218040A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19883813373 DE3813373A1 (en) 1988-04-21 1988-04-21 METHOD AND DEVICE FOR CONTINUOUSLY LAMINATING A FOAMED AND COMPACT PLASTIC FILM

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GB8905825D0 GB8905825D0 (en) 1989-04-26
GB2218040A true GB2218040A (en) 1989-11-08

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GB8905825A Withdrawn GB2218040A (en) 1988-04-21 1989-03-14 A method and apparatus for continuously laminating together foamed and high-density plastics films

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DE (1) DE3813373A1 (en)
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IT (1) IT1228354B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0569846A2 (en) * 1992-05-13 1993-11-18 R + S STANZTECHNIK GmbH Apparatus for producing trim panels and method for securing such trim panels to a support
NL1010620C2 (en) * 1998-11-20 2000-05-23 Klieverik Heli Bv Laminator.

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6045293B2 (en) * 2012-10-22 2016-12-14 酒井化学工業株式会社 Method for producing laminated sheet

Citations (2)

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Publication number Priority date Publication date Assignee Title
GB2115741A (en) * 1982-02-12 1983-09-14 Tecnasfalti Spa Composite sheet material including a layer of foamed plastics
GB2168923A (en) * 1984-12-17 1986-07-02 Paul Burke Foam plastics laminate

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Publication number Priority date Publication date Assignee Title
US3220902A (en) * 1962-07-20 1965-11-30 Illinois Tool Works Laminated container forming method and apparatus
GB1385716A (en) * 1971-08-10 1975-02-26 Lavorazione Mat Plast Method of manufacturing laminates of expanded thermoplastic resins
DE3023540A1 (en) * 1980-06-24 1982-01-21 Continental Gummi-Werke Ag, 3000 Hannover Continuous vulcanising appts. for belts has adjustable guide rollers - giving increased variable angle of wrap-around vulcanising drum

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2115741A (en) * 1982-02-12 1983-09-14 Tecnasfalti Spa Composite sheet material including a layer of foamed plastics
GB2168923A (en) * 1984-12-17 1986-07-02 Paul Burke Foam plastics laminate

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0569846A2 (en) * 1992-05-13 1993-11-18 R + S STANZTECHNIK GmbH Apparatus for producing trim panels and method for securing such trim panels to a support
EP0569846A3 (en) * 1992-05-13 1994-01-26 Roeder & Spengler Stanz
NL1010620C2 (en) * 1998-11-20 2000-05-23 Klieverik Heli Bv Laminator.
EP1002642A1 (en) * 1998-11-20 2000-05-24 Texmach B.V. Laminator
US6360803B1 (en) 1998-11-20 2002-03-26 Texmach B.V. Laminator

Also Published As

Publication number Publication date
GB8905825D0 (en) 1989-04-26
JPH01314143A (en) 1989-12-19
DE3813373A1 (en) 1989-11-09
IT8919731A0 (en) 1989-03-10
IT1228354B (en) 1991-06-14

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