WO1980000936A1 - A process for producing plastic foils with increased surface friction - Google Patents
A process for producing plastic foils with increased surface friction Download PDFInfo
- Publication number
- WO1980000936A1 WO1980000936A1 PCT/SE1979/000221 SE7900221W WO8000936A1 WO 1980000936 A1 WO1980000936 A1 WO 1980000936A1 SE 7900221 W SE7900221 W SE 7900221W WO 8000936 A1 WO8000936 A1 WO 8000936A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- plastic material
- foil
- extrusion
- foils
- stretching
- Prior art date
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
Definitions
- films and foils of plastic material have been widely used in many fields.
- One of the most important fields is the. packing industry.
- These films and foils have several suitable properties, among others, that they are stretch- able but have a good strength, that they are insensitive to the influence of water and other liquids, and that they can readily be heat welded.
- the finished foil or film will mostly have a very smooth and glossy surface.
- plastic .mate ⁇ rials especially polyolefins
- the stack may fall, as the fricition between the sacks is low. This involves risks of serious accidents.
- the plastic foil produced in this way has a suitably increased surface friction, it has the dis ⁇ advantage, however, that it requires an addition of blowing agent.
- blowing agents are not always phy ⁇ siologically acceptable and may make the use of the foil
- this object is achieved by preparing a plastic foil or film by extrusion,
- the dosage of plastic material to the foil or foils forming the outer layer or layers being controlled in the extrusion operation in such a ⁇ ay that the added amount of plastic material is insuffici-
- the extrusion is preferably carried out as extru- ⁇ sion blowing of a laminated tube through two or more concentric slit nozzles and a subsequent blowing and stretching of the hose.
- a plastic compound 6 is led from an extruder with a controlled dosage (not shown) to the slit die 2. As the added amount of the plastic compound 6 is too small to form a coherent layer when the extruded tube is blown out and stretched by the air bubble indicated by . 8, the outer layer will crack and give local deposits 7 of the plastic material. In this way, a rough surface will be obtained.
- the produced laminated foil is further treated in a comp ⁇ letely conventional way.
- it can be rolled up us a tube and be transported ⁇ as a roll to its final use.
- the controlling of the supply of plastic material to the extruder die or dies forming the layer which in ⁇ creases the friction can be carried out in such a way that the added amount is too small to obtain a coherent " ' - " layer after the stretching so that the layer thus breaks.
- P/ v WIFO ness of the finished foil can also be added to the star ⁇ ting material of the foil or foils forming the outer layers.
- Such fillers are known to those skilled in the art. 5
- a plastic material for the foil any thermoplastic material can be used which is conventionally usable for ⁇ extrusion of foils. Polyolefins are especially suitable and primarily the use of polyethylene is contemplated. The plastic material or materials forming the friction
- plastic material forming the main foil can often be the same as the plastic material forming the main foil. However, this is not absolutely necessary, but other plastic materials can also be used, provided that they can be laminated with the main foil material.
- the extruders are of the type known to those skilled in the art and the adjustment of the extruder providing a controlled dosage can be easily established on the ba ⁇ sis of simple preliminary tests.
- the extrusion is carried out in conventional manner also in other respects.
- Asperities may also here be formed on both sides of the foil.
- a foil or film of plastic material showing a high surface friction without the necessity of adding any foreign, expensiv and toxic materials is produced accor-
- the prepared foil material can therefore be used for packing of foodstuffs and other sensitive materials without any risks. This means con ⁇ siderable technical advantages and also an increased safety.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Laminated Bodies (AREA)
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2953283A DE2953283C1 (de) | 1978-11-01 | 1979-10-31 | Verfahren zum Herstellen einer Folie oder eines Schlauches mit erhoehter Oberflaechenrauhigkeit aus Kunststoff |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE7811311A SE414604B (sv) | 1978-11-01 | 1978-11-01 | Sett att framstella folie eller film av plastmaterial med forhojd ytfriktion |
SE7811311 | 1978-11-01 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1980000936A1 true WO1980000936A1 (en) | 1980-05-15 |
Family
ID=20336236
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/SE1979/000221 WO1980000936A1 (en) | 1978-11-01 | 1979-10-31 | A process for producing plastic foils with increased surface friction |
Country Status (8)
Country | Link |
---|---|
AT (1) | AT368439B (sv) |
CA (1) | CA1131868A (sv) |
CH (1) | CH652645A5 (sv) |
DE (1) | DE2953283C1 (sv) |
FI (1) | FI69776B (sv) |
GB (1) | GB2043527B (sv) |
SE (1) | SE414604B (sv) |
WO (1) | WO1980000936A1 (sv) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0822052A1 (fr) * | 1996-08-02 | 1998-02-04 | Société Anonyme dite: MESNEL | Procédé et dispositif de fabrication par extrusion d'un profilé à section variable localement |
US6444080B1 (en) * | 1997-02-05 | 2002-09-03 | Mandzsu, Sen. Jozsef | Process of roughening thermoplastic films and roughed plastic films |
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 |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3373438D1 (en) * | 1982-05-20 | 1987-10-15 | Stiksack Sts S A | Plastics film and bags and sacks therefrom |
GR20090100422A (el) * | 2009-07-28 | 2011-02-18 | Γεωργιος Κωνσταντινου Λαγουδερης | Θερμοπλαστικο φιλμ με ευκαμπτες ενισχυσεις, μηχανημα παραγωγης θερμοπλαστικου φιλμ με ευκαμπτες ενισχυσεις και μεθοδος παραγωγης αυτου |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FI63344C (sv) * | 1975-04-28 | 1988-05-03 | Wiik & Hoeglund | Förfarande för framställning av halkfri plastfolie |
-
1978
- 1978-11-01 SE SE7811311A patent/SE414604B/sv unknown
-
1979
- 1979-10-19 FI FI793258A patent/FI69776B/fi not_active Application Discontinuation
- 1979-10-25 CA CA338,458A patent/CA1131868A/en not_active Expired
- 1979-10-31 GB GB8020454A patent/GB2043527B/en not_active Expired
- 1979-10-31 WO PCT/SE1979/000221 patent/WO1980000936A1/en unknown
- 1979-10-31 CH CH5229/80A patent/CH652645A5/de not_active IP Right Cessation
- 1979-10-31 AT AT0903979A patent/AT368439B/de not_active IP Right Cessation
- 1979-10-31 DE DE2953283A patent/DE2953283C1/de not_active Expired
Non-Patent Citations (1)
Title |
---|
No relevant documents have been disclosed * |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0822052A1 (fr) * | 1996-08-02 | 1998-02-04 | Société Anonyme dite: MESNEL | Procédé et dispositif de fabrication par extrusion d'un profilé à section variable localement |
FR2751913A1 (fr) * | 1996-08-02 | 1998-02-06 | Mesnel | Procede et dispositif de fabrication par extrusion d'un profile a section variable localement, et profile ainsi realise |
US6444080B1 (en) * | 1997-02-05 | 2002-09-03 | Mandzsu, Sen. Jozsef | Process of roughening thermoplastic films and roughed plastic films |
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 |
US8322926B2 (en) | 2004-05-26 | 2012-12-04 | Kee Plastics Ab | Piping bag, blank for manufacturing a piping bag and method of manufacturing a piping bag |
Also Published As
Publication number | Publication date |
---|---|
GB2043527A (en) | 1980-10-08 |
DE2953283C1 (de) | 1985-02-28 |
CH652645A5 (de) | 1985-11-29 |
AT368439B (de) | 1982-10-11 |
GB2043527B (en) | 1982-10-06 |
DE2953283A1 (en) | 1980-12-18 |
FI793258A (fi) | 1980-05-02 |
CA1131868A (en) | 1982-09-21 |
FI69776B (fi) | 1985-12-31 |
SE7811311L (sv) | 1980-05-02 |
SE414604B (sv) | 1980-08-11 |
ATA903979A (de) | 1982-02-15 |
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