SE414604B - SET TO MAKE FILM OR FILM OF PLASTIC MATERIAL WITH INCREASED SURFACE - Google Patents

SET TO MAKE FILM OR FILM OF PLASTIC MATERIAL WITH INCREASED SURFACE

Info

Publication number
SE414604B
SE414604B SE7811311A SE7811311A SE414604B SE 414604 B SE414604 B SE 414604B SE 7811311 A SE7811311 A SE 7811311A SE 7811311 A SE7811311 A SE 7811311A SE 414604 B SE414604 B SE 414604B
Authority
SE
Sweden
Prior art keywords
plastic material
film
stretching
extrusion
plastic
Prior art date
Application number
SE7811311A
Other languages
Swedish (sv)
Other versions
SE7811311L (en
Inventor
N Karlsson
G Carlsson
G Jonsson
Original Assignee
Celloplast Ab
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 Celloplast Ab filed Critical Celloplast Ab
Priority to SE7811311A priority Critical patent/SE414604B/en
Priority to FI793258A priority patent/FI69776B/en
Priority to CA338,458A priority patent/CA1131868A/en
Priority to CH5229/80A priority patent/CH652645A5/en
Priority to PCT/SE1979/000221 priority patent/WO1980000936A1/en
Priority to DE2953283A priority patent/DE2953283C1/en
Priority to GB8020454A priority patent/GB2043527B/en
Priority to AT0903979A priority patent/AT368439B/en
Publication of SE7811311L publication Critical patent/SE7811311L/en
Publication of SE414604B publication Critical patent/SE414604B/en

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
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
    • B29C48/335—Multiple annular extrusion nozzles in coaxial arrangement, e.g. for making multi-layered tubular articles
    • B29C48/336—Multiple annular extrusion nozzles in coaxial arrangement, e.g. for making multi-layered tubular articles the components merging one by one down streams in 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
    • B29C48/03—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
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • 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
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • B29C48/10—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels flexible, e.g. blown foils
    • 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
    • B29C48/14—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the particular extruding conditions, e.g. in a modified atmosphere or by using vibration
    • B29C48/147—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the particular extruding conditions, e.g. in a modified atmosphere or by using vibration after the die nozzle
    • B29C48/1472—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the particular extruding conditions, e.g. in a modified atmosphere or by using vibration after the die nozzle at the die nozzle exit zone
    • 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
    • B29C2791/00—Shaping characteristics in general
    • B29C2791/004—Shaping under special conditions
    • B29C2791/007—Using fluid under pressure
    • 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
    • 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
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0037—Other properties
    • B29K2995/0072—Roughness, e.g. anti-slip
    • 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
    • B29L2023/00—Tubular articles
    • B29L2023/003—Tubular articles having irregular or rough surfaces

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
  • Laminated Bodies (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Description

10 É” 15 20 25 35 40 7811311--5 z laminera plastfolie med en eller flera andrà folier av ett sådant material eller med sådant utförande, att ytfriktionen ökas. Så- lunda är det exempelvis från US-PS 4 045 270 känt att sprutblåsa en laminerad slang, där huvudfolien av polyeten på en eller båda sidor förses med ett skikt av plastmaterial som medelst ett till- satt jäsmedel gjorts poröst. Vid den efter sprutningen följande uppblåsningen och sträckningen av slangen kommer det porösa plast- skiktet att sträckas så, att cellerna i materialet brister. Här- igenom uppkommer en grov, nätverkslíknande yta, som uppvisar en avsevärt förhöjd friktion. ' Ehuru den på detta sätt framställda plastfolien uppvisar en lämpligt ökad ytfriktion, är den dock behäftad med den olägenheten att den erfordrar en tillsats av jäsmedel, Sådana jäsmedel är icke alltid fysiologiskt invändningsfria, och kan göra folien oanvänd- bar inom livsmedelsindustrin, där en fullständig säkerhet måste föreligga mot att främmande och skadliga material övergår från förpackningsmatcrialet till det förpuckade livsmedlet. 10 É ”15 20 25 35 40 7811311--5 z laminate plastic foil with one or more other foils of such material or with such a design that the surface friction is increased. So- For example, it is known from US-PS 4,045,270 to spray blow a laminated hose, where the main foil of polyethylene on one or both sides are provided with a layer of plastic material which by means of an sat blowing agent made porous. At the following after spraying inflation and stretching of the hose, the porous plastic the layer to be stretched so that the cells in the material rupture. Here- through it arises a rough, network-like surface, which exhibits a significantly increased friction. ' Although the plastic foil produced in this way has one suitably increased surface friction, however, it suffers from that inconvenience that it requires the addition of blowing agents. Such blowing agents are not always physiologically unobtrusive, and may render the film unusable. bar in the food industry, where complete security is a must be present against the transfer of foreign and harmful materials the packaging material of the prepackaged food.

Genom föreliggande uppfinning undanröjes den ovan angivna olägenheten och erhålles en plastfolie med förhöjd ytfriktion, men som icke innehåller nâgra främmande tillsatser.The present invention eliminates the above the inconvenience and a plastic foil with increased surface friction is obtained, but which do not contain any foreign additives.

Enligt uppfinningen uppnås detta syftemàl genom att en plast- folie eller -film framställes genom strängsprutning, laminering och sträckning av två eller flera folier eller filmer av termo- plastmaterial, varvid doseringen av plastmaterial till den eller de folier som skall bilda ytterskiktet eller ytterskikten vid sträng- sprutningen styres så, att den tillförda mängden plastmaterial är otillräcklig för att efter sträckningen bilda ett sammanhängande skikt.According to the invention, this object is achieved by a plastic foil or film is produced by extrusion, lamination and stretching two or more films or films of thermo- plastic material, the dosage of plastic material to the or the foils which are to form the outer layer or outer layers at the the spraying is controlled so that the amount of plastic material added is insufficient to form a coherent post-stretch layer.

Företrädesvis genomföras strängsprutningen som sprutblåsning av laminerad slang genom två eller flera koncentriska slitsmun- stycken och följande uppblåsning och sträckning av slangen.Preferably, the extrusion is performed as a spray blowing of laminated hose through two or more concentric slit mouths pieces and the subsequent inflation and stretching of the hose.

Härigenom kommer ytterskiktet att vid sträckningen spricka upp och bilda en skrovlig yta, så att ytfriktionen ökas hos den färdiga folien. g I ritningen visas schematiskt ett exempel på genomförandet av uppfinningen. Här visas i schematisk sektíonsvy ett strängsprut- huvud 1 med två ringformiga, koncentriskaslitsmunstycken Z och SJ Genom det inre munstycket 3 ledes genom värme uppmjukad plastmassa 4 från en konventionell strängsprutanordning (ej visad) och ut- sprutas till slangfolien 5. Plastmassa 6 ledes från en strängsprut- 10 15 20 25 30 35 40 _ .,..,,.,,,,. .Vw .W ...___ z . .7811311-5 anordning med styrd dosering (ej visad) till slítsmunstycket 2.As a result, the outer layer will crack during stretching up and form a rough surface, so that the surface friction increases with it finished foil. g The drawing schematically shows an example of the implementation of the invention. Here, in schematic sectional view, an extruder head 1 with two annular, concentric slot nozzles Z and SJ Plastic mass softened by heat is passed through the inner nozzle 3 4 from a conventional extruder (not shown) and sprayed to the hose foil 5. Plastic mass 6 is led from an extruder 10 15 20 25 30 35 40 _., .. ,,. ,,,,. .Vw .W ...___ z. .7811311-5 device with controlled dosing (not shown) to the slit nozzle 2.

Eftersom den tillförda mängden av plastmassan 6 är för liten för att kunna bilda ett sammanhängande skikt när den sprutade slangen uppblåses och sträckes genom den med 8 antydde luftbläsan, kommer ytterskiktet att spricka upp och ge lokala avsättningar 7 av plast- materialet. Härigenom kommer en skrovlig yta att erhållas.Because the added amount of the plastic mass 6 is too small for to be able to form a coherent layer when spraying the hose inflated and stretched through the air bladder indicated by 8, will the outer layer to crack open and give local deposits 7 of plastic the material. As a result, a rough surface will be obtained.

Efter upphlåsningen och sträckningen vidarebehandlas den framställda, laminerade folien på helt konventionellt sätt. Så- lunda kan den upplindas som en slang och i rulle transporteras vidare till den slutliga användningen.After unlocking and stretching, it is further processed produced, laminated the foil in a completely conventional manner. So- it can be wound up like a hose and transported in a roll on to the end use.

Det är givetvis även möjligt att använda tre koncentriska slitsmunstycken och styra tillförseln av plastmassa till det in- nersta och det yttersta munstycket pä ovan angivet sätt. Härige- nom erhålles en ökad ytfriktion på folíens båda sider.Of course, it is also possible to use three concentric ones slit nozzles and control the supply of plastic mass to the the lowest and outermost nozzles in the manner indicated above. Härige- an increased surface friction is obtained on both sides of the foil.

Styrningen av tillíörseln av plastmaterial till det eller de sprutmunstycken som bildar det friktionsökande skiktet kan ske sa, att den tillförda mängden är för liten för att ett sammanhängande skikt skall erhållas efter sträckningen, då skíktet alltså brister.The control of the supply of plastic material to the one or the other spray nozzles forming the friction-increasing layer can be made so, that the amount added is too small for a coherent layers must be obtained after the stretching, as the layer thus breaks.

Det är även möjligt att styra tíllförseln så, att den sker stötvis.It is also possible to control the supply so that it takes place in shocks.

Detta ger en mera markant skrovlig yta hos folien. Vidare kan man även till utgângsmaterialet för den eller de folíer som bildar ytterskikten sätta fyllmedel eller fibrer som ger detta plastma- terial dåliga flytegenskaper och på detta sätt ökar ytrâheten hos den färdiga folien. Sådana fyllmedel är kända för fackmannen.This gives a more markedly rough surface of the foil. Furthermore, one can also to the starting material for the film or films forming the outer layers put fillers or fibers that give this plastic terial poor flow properties and in this way increases the surface roughness of the finished foil. Such fillers are known to those skilled in the art.

Som plastmaterial för folien kan användas varje termoplast- muterial som konventionellt lämpar sig för strängsprutníng av folier. Speciellt lämpliga är polyolefiner, och Främst avses an- vändning av polyeten. Det eller de plastmaterial som bildar det friktionsökande ytskiktet kan ofta vara samma som det plast- material som bildar själva folien. Detta är dock icke oundgäng- ligen nödvändigt, utan även andra plastmaterial kan användas, förut- satt att de kan sammanlamineras med foliematerialet.Any thermoplastic can be used as the plastic material for the foil. muterial conventionally suitable for extrusion of foils. Particularly suitable are polyolefins, and reversal of polyethylene. The plastic material or materials that form it friction-increasing surface layer can often be the same as the plastic material that forms the foil itself. However, this is not necessary, but other plastic materials can also be used, provided set that they can be laminated together with the foil material.

De använda strängsprutapparaterna är av typ som är känd för fackmannen, och inställningen av den strängsprutapparat som ger en styrd dosering kan lätt fastställas på basis av enkla förförsök. Även i övrigt sker strängsprutningen på konventionellt sätt.The extruders used are of the type known for the professional, and the setting of the extruder which provides one Controlled dosing can be easily determined on the basis of simple preliminary tests. Also otherwise the extrusion takes place in a conventional manner.

I det föregående har sättet enligt uppfinningen beskrivits främst'med hänvisning till sprutbläsning av slang, vilket utgör en förcdragen utföringsform. Det ínses dock, att uppfinníngens för- delar även erhålles vid strängsprutning av folíer genom raka slits~ , ...q-ßwn.. . . . _.. --_ --. - .__- f .I ..-:4_._1.- ....~. . ..._..__,.._..._.,..._.___í.. . .._-.. ._ . 10 7181131145 4 munstycken och följande lamínering och sträckning. Genom en styrd dosering till det strängsprutmunstycke som ger ytskíktet erhålles även här att ytskiktct innehåller otillräckligt av material för att efter sträckningen ge ett sammanhängande skikt, utan i stället spricker upp och ger en skrovlig yta. Skrovlígheter kan även här utbildas på foliens båda sidor.In the foregoing, the method according to the invention has been described mainly 'with reference to spray blowing of hose, which constitutes a preferred embodiment. It is to be understood, however, that the invention parts are also obtained by extruding foils through straight slits ~ , ... q-ßwn ... . . _ .. --_ -. - .__- f .I ..-: 4 _._ 1.- .... ~. . ..._..__, .._..._., ..._.___ í ... .._- .. ._. 10 7181131145 4 nozzles and subsequent lamination and stretching. Through a controlled dosage to the extruder nozzle which gives the surface layer is obtained also here that the surface layerct contains insufficient material for to give a coherent layer after the stretch, but instead cracks open and gives a rough surface. Roughness can also here trained on both sides of the foil.

Genom föreliggande uppfinning framställes en folie eller film av plastmaterial som uppvisar en hög ytfriktion utan att_någ- ra främmande, dyrbara och giftiga material behöver tíllsättas. Det framställda folíematerialet kan därför utan betänkligheter använ- das till förpackning av livsmedel och andra känsliga material. Detta innebär avsevärda tekniska fördelar och även en förhöjd säkerhet. . ...www-_The present invention produces a film or film film of plastic material which exhibits a high surface friction without foreign, precious and toxic materials need to be added. The produced foil material can therefore be used without hesitation for the packaging of food and other sensitive materials. This entails significant technical advantages and also increased security. . ... www-_

Claims (6)

..,-_.,-_-,e-,_....~.- -f,.~.-.»~~»-wn,-_-=\-~« ~ --«-f -- -- - f '7811311-5 5 Pat__e_n_t_l_.., -_., -_-, e -, _.... ~ .- -f ,. ~ .-. »~~» -wn, -_- = \ - ~ «~ -« - f - - - f '7811311-5 5 Pat__e_n_t_l_ 1. Sätt att framställa folie eller film av plastmaterial med förhöjd ytfriktion genom strängsprutníng, lamínering och sträck- ning av två eller flera folier av termoplastmaterial, k ä n n e - t'e c°k n a t därav, att doseringen av plastmaterial till den eller de folier eller filmer som skall bilda ytskiktct eller yt- skikten vid strängsprutningen styres så, att den tillförda mängden plastmaterial är otillräcklig för att efter sträckningen bilda ett sammanhängande skikt.1. Methods of making a film or film of plastic material with increased surface friction by extrusion, lamination and stretching of two or more films of thermoplastic material, knowing that the dosage of plastic material to the film or films or films which are to form the surface layer or the surface layers during the extrusion are controlled so that the supplied amount of plastic material is insufficient to form a continuous layer after the stretching. 2. Sätt enligt krav 1, k ä n n e t e c k n e t därav, att strängsprutningcn genomföres som sprutblåsníng av laminerad slang genom två eller flera konccntriska slitsmunstycken, och följande uppblåsning och sträckning av slangen. I ,2. A method according to claim 1, characterized in that the extrusion is carried out as spray blowing of laminated hose through two or more concentric slit nozzles, and the subsequent inflation and stretching of the hose. I, 3. Sätt enligt krav 1 eller 2, k ä n n e t e c k n a t därav, att doseringen av plastmaterial till ytskiktet eller yt- skikten styres så, att den sker stötvis.3. A method according to claim 1 or 2, characterized in that the dosing of plastic material to the surface layer or surface layers is controlled so that it takes place in shocks. 4. Sätt enligt något av krav 1-3, k ä n n e t e c k n a t därav, att det eller de plastmaterial som skall bilda ytskiktet eller ytskikten är försatta med fyllmedel eller fibrer som minskar plastmatcrialets ílytbarhet.4. A method according to any one of claims 1-3, characterized in that the plastic material or materials which are to form the surface layer or surface layers are provided with fillers or fibers which reduce the solubility of the plastic material. 5. Sätt enligt något av krav 1-4, k ä n n e t e c k n a t därav, att det plastmaterial som bildar ytskiktet är samma som det plastmaterial som bildar huvudfolien. _5. A method according to any one of claims 1-4, characterized in that the plastic material forming the surface layer is the same as the plastic material forming the main foil. _ 6. Sätt enligt något av krav 1-5, k ä n n e t e c k n a t därav, att plastmateríalet utgöres av polyolefín, speciellt då polyeten. _........._...____.... ”ß ' ~ "'- --~ -:--. . -. .- .__...a>..~.........._._._._.__......6. A method according to any one of claims 1-5, characterized in that the plastic material consists of polyolefin, especially polyethylene. _........._...____.... ”ß '~"' - - ~ -: -.. -. .- .__... a> .. ~. ........._._._._.__......
SE7811311A 1978-11-01 1978-11-01 SET TO MAKE FILM OR FILM OF PLASTIC MATERIAL WITH INCREASED SURFACE SE414604B (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
SE7811311A SE414604B (en) 1978-11-01 1978-11-01 SET TO MAKE FILM OR FILM OF PLASTIC MATERIAL WITH INCREASED SURFACE
FI793258A FI69776B (en) 1978-11-01 1979-10-19 SAETT ATT FRAMSTAELLA PLASTFOLIE
CA338,458A CA1131868A (en) 1978-11-01 1979-10-25 Process for producing plastic foil
CH5229/80A CH652645A5 (en) 1978-11-01 1979-10-31 METHOD FOR PRODUCING A COMPOSITE FILM FROM PLASTIC.
PCT/SE1979/000221 WO1980000936A1 (en) 1978-11-01 1979-10-31 A process for producing plastic foils with increased surface friction
DE2953283A DE2953283C1 (en) 1978-11-01 1979-10-31 Process for producing a film or tube with increased surface roughness from plastic
GB8020454A GB2043527B (en) 1978-11-01 1979-10-31 Process for producing plastic foils with increased surface friction
AT0903979A AT368439B (en) 1978-11-01 1979-10-31 METHOD FOR PRODUCING MULTILAYER FILMS

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE7811311A SE414604B (en) 1978-11-01 1978-11-01 SET TO MAKE FILM OR FILM OF PLASTIC MATERIAL WITH INCREASED SURFACE

Publications (2)

Publication Number Publication Date
SE7811311L SE7811311L (en) 1980-05-02
SE414604B true SE414604B (en) 1980-08-11

Family

ID=20336236

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7811311A SE414604B (en) 1978-11-01 1978-11-01 SET TO MAKE FILM OR FILM OF PLASTIC MATERIAL WITH INCREASED SURFACE

Country Status (8)

Country Link
AT (1) AT368439B (en)
CA (1) CA1131868A (en)
CH (1) CH652645A5 (en)
DE (1) DE2953283C1 (en)
FI (1) FI69776B (en)
GB (1) GB2043527B (en)
SE (1) SE414604B (en)
WO (1) WO1980000936A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0095849B1 (en) * 1982-05-20 1987-09-09 Stiksack STS S.A. Plastics film and bags and sacks therefrom
FR2751913B1 (en) * 1996-08-02 1998-10-30 Mesnel METHOD AND DEVICE FOR MANUFACTURING BY EXTRUSION OF A PROFILE WITH LOCALLY VARIABLE SECTION, AND PROFILE THUS PRODUCED
EP1015229B9 (en) * 1997-02-05 2007-02-21 Jozsef Mandzsu, Sr. Process for preventing packaging films from slipping on each other
US7775716B2 (en) 2004-05-26 2010-08-17 Kee Plastics Ab Piping bag, blank for manufacturing a piping bag and method of manufacturing a piping bag
GR20090100422A (en) * 2009-07-28 2011-02-18 Γεωργιος Κωνσταντινου Λαγουδερης Thermoplastic film with flexible ribs - machine and method for the production of same

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI63344C (en) * 1975-04-28 1988-05-03 Wiik & Hoeglund FOER FARING FOR FRAMING OF PLASTIC PLASTICS.

Also Published As

Publication number Publication date
GB2043527A (en) 1980-10-08
GB2043527B (en) 1982-10-06
FI793258A (en) 1980-05-02
ATA903979A (en) 1982-02-15
WO1980000936A1 (en) 1980-05-15
DE2953283C1 (en) 1985-02-28
AT368439B (en) 1982-10-11
CA1131868A (en) 1982-09-21
SE7811311L (en) 1980-05-02
FI69776B (en) 1985-12-31
CH652645A5 (en) 1985-11-29
DE2953283A1 (en) 1980-12-18

Similar Documents

Publication Publication Date Title
ES2490717T3 (en) High clarity and high rigidity films
SE454662B (en) Heat-shrinkable multi-layer packaging film based on ethylene copolymers
US3607505A (en) Method of producing a laminated tubular article
SE460534B (en) Multilayer film with core layers of polyene and polyethylene outer layers
TWI734786B (en) Antislip, heat sealable plastic flexible packaging bag and method and apparatus for its production
US8480836B2 (en) Double-sided slip-resistant material and method of making same
AU777686B2 (en) Label made of polyolefin film
JPH0233510B2 (en)
CN108773137A (en) Automatically it is packed for polyethylene film and preparation method thereof
JP2008538194A (en) Transverse elastomeric breathable film
US4284458A (en) Method for producing laminated film
US9028732B2 (en) Self-adhered single-sided slip-resistant material
SE414604B (en) SET TO MAKE FILM OR FILM OF PLASTIC MATERIAL WITH INCREASED SURFACE
US3832270A (en) Heat shrinkage,oriented laminated plastic film
JP2005297544A (en) Polypropylene type laminated film and package using it
KR101242227B1 (en) Method of manufacturing oriented polyolefin film for heat lamination and oriented polyolefin film manufactured by thereof
JP6372924B2 (en) Polyolefin heat shrinkable film
AU671815B2 (en) Polymeric films
US3485907A (en) Method for making a printed,multilayer tubing
JP2592425B2 (en) In-mold label
JPS6364290B2 (en)
JP2001113585A (en) Method of manufacturing foamed laminate
IT201800006996A1 (en) THERMAL LAMINATED COUPLED IN "MONOMATERIAL" BASED ON POLYETHYLENE FOR RECYCLABLE FLEXIBLE PACKAGING
TW201739597A (en) Method for manufacturing molded article having grain pattern, and molded article having grain pattern
PL240951B1 (en) Multi-ply film and method for producing the multi-ply film