NL2011548C2 - A method for manufacturing a film of high performance polymers. - Google Patents

A method for manufacturing a film of high performance polymers. Download PDF

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Publication number
NL2011548C2
NL2011548C2 NL2011548A NL2011548A NL2011548C2 NL 2011548 C2 NL2011548 C2 NL 2011548C2 NL 2011548 A NL2011548 A NL 2011548A NL 2011548 A NL2011548 A NL 2011548A NL 2011548 C2 NL2011548 C2 NL 2011548C2
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NL
Netherlands
Prior art keywords
high performance
sheet
performance polymers
pressure sensitive
sensitive adhesive
Prior art date
Application number
NL2011548A
Other languages
Dutch (nl)
Inventor
Bart Clemens Kranz
Original Assignee
Olympic Tape B V
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Publication date
Application filed by Olympic Tape B V filed Critical Olympic Tape B V
Priority to NL2011548A priority Critical patent/NL2011548C2/en
Priority to PCT/NL2014/050686 priority patent/WO2015050452A1/en
Application granted granted Critical
Publication of NL2011548C2 publication Critical patent/NL2011548C2/en

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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
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/06—Fibrous reinforcements only
    • B29C70/08—Fibrous reinforcements only comprising combinations of different forms of fibrous reinforcements incorporated in matrix material, forming one or more layers, and with or without non-reinforced layers
    • B29C70/086—Fibrous reinforcements only comprising combinations of different forms of fibrous reinforcements incorporated in matrix material, forming one or more layers, and with or without non-reinforced layers and with one or more layers of pure plastics material, e.g. foam layers
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/20—Adhesives in the form of films or foils characterised by their carriers
    • C09J7/22—Plastics; Metallised plastics
    • C09J7/24—Plastics; Metallised plastics based on macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
    • C09J7/241—Polyolefin, e.g.rubber
    • C09J7/243—Ethylene or propylene polymers
    • 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
    • B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
    • B29C55/02—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets
    • B29C55/04—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets uniaxial, e.g. oblique
    • B29C55/06—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets uniaxial, e.g. oblique parallel with the direction of feed
    • 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
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/04—Polymers of ethylene
    • B29K2023/06—PE, i.e. polyethylene
    • B29K2023/0658—PE, i.e. polyethylene characterised by its molecular weight
    • B29K2023/0683—UHMWPE, i.e. ultra high molecular weight polyethylene
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2301/00—Additional features of adhesives in the form of films or foils
    • C09J2301/30—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier
    • C09J2301/302—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier the adhesive being pressure-sensitive, i.e. tacky at temperatures inferior to 30°C
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2301/00—Additional features of adhesives in the form of films or foils
    • C09J2301/30—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier
    • C09J2301/312—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier parameters being the characterizing feature
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2423/00—Presence of polyolefin
    • C09J2423/04—Presence of homo or copolymers of ethene
    • C09J2423/046—Presence of homo or copolymers of ethene in the substrate

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Composite Materials (AREA)
  • Mechanical Engineering (AREA)
  • Laminated Bodies (AREA)

Abstract

The present invention relates to a method for manufacturing a film of high performance polymers, the method comprising the steps of: a) forming a sheet of oriented integrated high performance polymers, b) applying a pressure sensitive adhesive on at least one side of the sheet of oriented integrated high performance polymers, c) winding the sheet of oriented integrated high performance polymers provided with pressure sensitive adhesive for forming a roll. The present invention relates to a method for manufacturing a film or high performance polymers, the method including the steps of: a) forming a sheet or oriented integrated high performance polymers, b) applying a pressure sensitive adhesive on at least one side of the sheet or oriented integrated high performance polymers, c) winding the sheet or oriented integrated high performance polymers provided with pressure sensitive adhesive for forming a roll.

Description

A method for manufacturing a film of high performance polymers
The invention pertains to a method for manufacturing a film of high performance polymers and in particular polymers in the form of fibers and sheets.
High performance polymer fibres and sheets are characterized by their high tensile strength which is typically > 1 GPa and a tensile modules of at least 40 GPa. Examples of high performance fibres are polyolefins like ultra-high molecular weight polyethylene (UHMWPE) fibres such as Dyneema and Spectra or highly drawn polyethylene or polypropylene fibres, para-aramide fibres such as Twaron and Kevlar, poly(p-phenyle-2,6-benzobisoxazole) (PBO) fibre such as Zylon, carbon fibres such as Torayca and highly drawn nylon fibres. An example of high performance polymer sheet is Endumax and Dyneema tape which are based on ultra-high molecular weight polyethylene (UHMWPE).
Methods for manufacturing high-strength high-modulus UHMWPE films are known in the art. US 5,756,660 describes polymerisation of UHMWPE over a specific catalyst, followed by compression moulding, rolling and stretching to form a polymer film. US 5,106,555 describes a method for compression molding / stretching of UHMWPE. US 5,503,791 describes a polyethylene film manufactured by extruding a solution of a polyolefin in a first solvent, followed by cooling, the removal of the solvent and stretching of the film. US 5,106,558 describes a method for the continuous preparation of a polyethylene having high strength and high modulus.
High performance polymer fibres and sheets are based on highly oriented polymer molecules which are made by drawing a polymer of a specific form and shape into an elongated element. Draw ratios or stretch ratios (i.e. final length after drawing divided by the original length before drawing) can be over 50.
There are several methods to make articles from high performance polymers and sheets. For example fibres can be wrapped into bundles, which can be used as ropes or fishing lines. It is also possible to weave fibres into yarn, which can be processed to make anti-ballistic panels or sails. These processes are well known from the conventional textile industry. The disadvantage, however, is that a woven fabric is relatively thick with a relatively large empty volume, which does not contain high performance materials, between the fibres. Also the inter fibres connection is obtained by using the relatively expensive fibres themselves. And due to the different weaving directions the performance/weight ratio in one direction is relatively low.
In other applications high performance fibres are used in a unidirectional (UD) alignment. This means that the majority of the fibres are aligned in the same direction. In general it can be said that for a UD alignment, at minimum 75-90% of the fibres should be aligned in the same direction and preferably all of the fibres should be aligned in the same direction. Although it should be noted that UD aligned laminates are almost always stacked where they are alternated in 0-90 degrees and under heat and pressure formed into a plate or simple 3D objects. UD fabrics have the advantages that a minimum of (expensive) high performance fibres can be used to get the required mechanical properties in a certain direction. However, in a UD alignment, there is little to no physical interaction between the fibres to prevent fibrillation. Fibrillation is (partial) detachment of fibres from an article made from high performance polymer fibres. A similar problem, which also referred to as fibrillation, is known for sheets of high performance polymers, where (partial) detachment of (very) (small) strands of sheet can occur. A sheet of high performance polymers has similar properties as UD aligned high performance fibres since also in said sheets the polymer molecules are UD aligned. Several technologies are known from the prior art to prevent this problem and to make articles from UD aligned polymer fibres and sheets. Each of these solutions uses a bonding material which has a melting temperature that is lower than the melting temperature of the fibres or sheet. Basically this bonding material is applied on/between the fibres or sheets. The stack of fibres or sheets and the bonding material is heated up, under pressure, to a point where the bonding material liquefies, but the fibres or sheets do not. Examples of prior art where this concept is used is W02008/040510. This document teaches how UD directionally aligned polymeric sheets (being referred to as a tape), are connected together by using a binding yarn which has a melting temperature which lower than the melting temperature of the sheets.
The disadvantage of using a bonding material which has a melting temperature that is lower than the melting temperature of the fibres or sheets is that processing is difficult and expensive. A relatively high temperature is required to liquefy the bonding material and a high pressure is required to prevent that the high performance fibres or sheets lose their properties at these temperatures. Processing is therefore done by using a hot-press to keep the fibres positioned during processing and avoid shrinkage (and thus loosing properties) of the fibres or sheets.
This is a slow and expensive process. Also it is not possible to make very large or non-flat objects, and typically only simply flat plates and simple, non-complicated, 3D structures can be made via this process.
Another method processing UD aligned high performance polymer fibres and sheets, but also yarn or chopped fibres is to apply a thermosetting resin to the high performance polymers. This is known as pre-impregnated fibres or prepregs. Prepregs are widely known and used in multiple industries and can be processed relatively easily and in many shapes. The disadvantage, however, is that a relatively large amount of thermosetting resin, and thus non high performance material, is used. This dilutes the performance/weight ratio of the high performance materials significantly. Also the resins which are used (mainly epoxy and polyester) are highly environmentally unfriendly and often very toxic.
The above solutions known from the prior-art have the problem that they use relatively large volumes of non-high performance material and/or high processing temperatures and/or high pressures during processing to keep the fibres or sheets together. Additionally, none of the processes is suitable for applying high performance fibres and sheets to secondary materials like e.g. a metal frame. Additional processing steps are always required. E.g. holes need to be drilled in a plate made from high performance fibres or sheets and a bonding material to connect said plate by using screws to a metallic frame.
The present aims to overcome one or more of the problems mentioned above.
The present invention relates to a method for manufacturing a film of high performance polymers, the method comprising the steps of: a) forming a sheet of oriented integrated high performance polymers, b) applying a pressure sensitive adhesive on at least one side of the sheet of oriented integrated high performance polymers, c) winding the sheet of oriented integrated high performance polymers provided with pressure sensitive adhesive for forming a roll.
By the above mentioned steps one or more of the above identified problems can be overcome.
According to a special embodiment present step a) comprises the following steps: A1) Providing high performance polymers in particulate form, A2) compacting the high performance polymers for forming a sheet of integrated high performance polymers, and A3) stretching the sheet of integrated high performance polymers for forming said sheet of oriented integrated high performance polymers.
According to another preferred embodiment present step a) comprises the following steps: A4) providing several individual high performance fibers, A5) aligning said several individual high performance fibers, A6) applying a bonding layer on at least one side of the aligned array of high performance fibers forming said sheet of oriented integrated high performance polymers.
The film according to the invention enables adhering a layer of high performance polymers to a secondary object without using heat and/or pressure and decreases fibrillation of the UD aligned high performance fibres and sheets.
An oriented integrated high performance polymers sheet, which is made by providing high performance polymers in particulate form, compacting the high performance polymers for forming a sheet of integrated high performance polymers and stretching the sheet of integrated high performance polymers for forming a sheet of oriented integrated high performance polymers is preferably based on ultra-high molecular weight polyethylene (UHMWPE). Said sheet of oriented integrated high performance polymers has preferably a tensile strength of at least 1.0 GPa, a tensile modules of at least 40 GPa, an Mw of at least 500.000, and a sheet width of at least 2 mm. An examples of said sheet is Endumax ® or Dyneema® tape.
In a preferred embodiment of the invention a bonding layer is be applied to the film of high performance polymers. Said bonding layer could prevent fibrillation of the sheet of oriented integrated high performance polymers and provide lateral- and axial-bonding. The bonding layer is preferably made from a thermoplastic material and can for example be made from ethylene vinyl acetate copolymer (EVA), linear low density polyethylene (LLDPE), high density polyethylene (HDPE), low density polyethylene (LDPE), ethylene alkyl acrylate copolymer (EAA), ethylene butyl acrylate copolymer (EBA), ethylene methyl acrylate copolymer (EMA), poly(propylene) (PP) or poly(vinyl alcohol). In another preferred embodiment of the invention the bonding material is a thermoset material.
Preferably the layer of bonding material should have an average thickness of less than 100 micron, more preferably less than 50 micron and most preferably less than 15 micron.
The bonding layer might have another function such shielding against UV light and/or temperature and/or moisture and/or chemicals and/or bio organisms. The layer might also have electrical or anti-static or fire retarding properties.
In order to obtained a sheet of oriented integrated high performance polymers it is imported that the sheet of integrated high performance polymer is stretched with a stretch ratio, (i.e. ratio between length of sheet after stretching and original length of sheet before stretching) of more than 5, preferably more than 15, most preferably more than 50. A pressure sensitive adhesive (PSA) is an adhesive which forms a bond when pressure is applied to join the adhesive with the adherent. The layer of pressure sensitive (PSA) adhesive is chosen from a group of pressure sensitive adhesives comprising acrylics, bio-based acrylate, butyl rubber, Ethylene-vinyl acetate (EVA), Natural rubber, nitriles, Silicone rubbers, Styrene block copolymers (SBC), Styrene-butadiene-styrene (SBS), Styrene-ethylene/butylene-styrene (SEBS), Styrene-ethylene/propylene (SEP)Styrene-isoprene-styrene (SIS), Vinyl ethers, or mixture thereof.
The pressure sensitive adhesive is preferably applied to at least 80% of the surface of at least one side of the sheet of oriented integrated high performance polymers. More preferably it is at least applied to 90% and most preferably to more 99% of the surface of at least one side of the sheet of oriented integrated high performance polymers.
The layer of pressure sensitive adhesive has an average thickness of preferably less than 200 micron and more preferably between 3-50 micron.
According to a preferred embodiment the adhesion of the pressure sensitive adhesive to the sheet of integrated oriented high performance polymers is improved exposing the surface of sheet to which the pressure sensitive adhesive will be applied to a plasma treatment or corona treatment.
The invention also comprises winding the sheet of oriented integrated high performance polymers provided with pressure sensitive adhesive for forming a roll. To be able to unwind said roll it might be required to apply a release foil to the layer of pressure sensitive adhesive or alternatively applying an anti-sticking surface to the, non PSA containing side of sheet of oriented integrated high performance polymers or the bonding layer.
The film according to the invention enables to adhere a layer of high performance polymers to a secondary object, which can be any object were the product is applied to and can be made from any materials such as glass, polymers, metals, ceramics, tissue, skin, paper, plaster, fabric, concrete or wood. The product according to the invention can in principle also be applied on a film according to the invention.
It is also possible that an additional layer is applied to the sheet of oriented integrated high performance polymers provided with pressure sensitive adhesive such as a layer of foam or metallic foil.
In a preferred embodiment of the present invention it is possible to use high performance polymer fibres, to make the sheet of oriented integrated high performance polymers by providing several individual high performance fibers, aligning said several individual high performance fibers and forming a sheet of oriented integrated high performance polymers by applying a bonding layer on at least one side of the aligned array of high performance fibers.
High performance polymer fibres are characterized by their high tensile strength which is typically > 1 GPa and a tensile modules of at least 40 GPa. Examples of high performance polymer fibres are polyolefins like ultra-high molecular weight polyethylene (UHMWPE) fibres such as Dyneema and Spectra or highly drawn polyethylene or polypropylene fibres, para-aramide fibres such as Twaron and Kevlar, poly(p-phenyle-2,6-benzobisoxazole) (PBO) fibre such as Zylon, carbon fibres such as Torayca and highly drawn nylon fibres.
The high performance fibres according to the inventions are aligned in a UD alignment. The fibres are considered to be UD aligned when the majority, thus more than 50%, of the fibres are aligned in the same direction. In a preferred embodiment of the invention a minimum of 75% of the fibres is aligned in the same direction, in more preferred embodiment 90% of the fibres is aligned in the same direction and most preferably all of the fibres are aligned in the same direction.
The present invention will be further illustrated by way of schematic drawings which do not limit the scope but are only for illustrative purposes.
Fig 1 shows an embodiment of the present invention.
Fig 2 shows another embodiment of the present invention.
Fig 4 shows another embodiment of the present invention.
Fig 5 shows another embodiment of the present invention.
Fig 6 shows another embodiment of the present invention.
Fig 7 shows another embodiment of the present invention.
Fig 8 shows another embodiment of the present invention.
Fig 9 shows another embodiment of the present invention.
Fig 10 shows another embodiment of the present invention.
Fig 11 shows another embodiment of the present invention.
Fig 12 shows another embodiment of the present invention.
Fig 13 shows another embodiment of the present invention.
Fig 14 shows another embodiment of the present invention.
Fig 15 shows another embodiment of the present invention.
Fig 16 shows another embodiment of the present invention.
Fig 17 shows another embodiment of the present invention.
In Fig 1 the film of high performance polymers 1 comprises a sheet of oriented integrated high performance polymers 2 provided with a layer of pressure sensitive adhesive 3. Fig 2 shows a film of high performance polymers 10 comprising a sheet of oriented integrated high performance polymers 2 and two layers of pressure sensitive adhesive 3. These two layers 3 can be identical or include different types of pressure sensitive adhesive. Fig 3 shows a film of high performance polymers 20 comprising a sheet of oriented integrated high performance polymers 2 sandwiched between a layers of pressure sensitive adhesive 3 and a bonding layer 4. Fig 4 shows a film of high performance polymers 30 comprising an anti sticking surface or layer 6, a bonding layer 4, a sheet of oriented integrated high performance polymers 2 and a layer of pressure sensitive adhesive 3. Fig 5 shows a film of high performance polymers 40 comprising a pressure sensitive adhesive layer 3, a bonding layer 4, a sheet of oriented integrated high performance polymers 2 and a layer of pressure sensitive adhesive 3. Fig 6 shows a film of high performance polymers 50 comprising a pressure sensitive adhesive layer 3, a bonding layer 4 and a sheet of oriented integrated high performance polymers 2. Fig 7 shows a film of high performance polymers 60 comprising an array of unidirectional aligned fibers 5, a bonding layer 4 and a layer of pressure sensitive adhesive 3. Fig 8 shows a film of high performance polymers 70 comprising a layer of pressure sensitive adhesive 3, an array of unidirectional aligned fibers 5, a bonding layer 4. Fig 9 shows a film of high performance polymers 80 comprising a layer of pressure sensitive adhesive 3, an array of unidirectional aligned fibers 5, a bonding layer 4 and an anti sticking surface or layer 6. Fig 10 shows a film of high performance polymers 90 comprising a layer of pressure sensitive adhesive 3, an array of unidirectional aligned fibers 5, a bonding layer 4 and a layer of pressure sensitive adhesive 3. These two layers 3 can be identical or include different types of pressure sensitive adhesive. Fig 11 shows a film of high performance polymers 100 comprising a layer of pressure sensitive adhesive 3, an array of unidirectional aligned fibers 5, a bonding layer 4 and a layer of pressure sensitive adhesive 3. These two layers 3 can be identical or include different types of pressure sensitive adhesive. The array of unidirectional aligned fibers 5 is embedded in the bonding layer 4. Fig 12 shows a film of high performance polymers 110 comprising a layer of pressure sensitive adhesive 3, an array of unidirectional aligned fibers 5, a first bonding layer 4, a second bonding layer 4 and a layer of pressure sensitive adhesive 3. The array of unidirectional aligned fibers 5 is embedded in the first bonding layer 4. Fig 13 shows a film of high performance polymers 120 comprising a layer of pressure sensitive adhesive 3, an array of unidirectional aligned fibers 5, a bonding layer 4, a layer of pressure sensitive adhesive 3 and an anti sticking surface or layer 6. The array of unidirectional aligned fibers 5 is embedded in bonding layer 4. Fig 14 shows a film of high performance polymers 130 comprising a release foil 7, a layer of pressure sensitive adhesive 3, and a sheet of oriented integrated high performance polymers 2. Fig 15 shows a film of high performance polymers 140 comprising a release foil 7, a layer of pressure sensitive adhesive 3, and a sheet of oriented integrated high performance polymers 2, wherein the plasma treatment of the sheet of oriented integrated high performance polymers is indicated with reference number 8. Fig 16 shows a film of high performance polymers 140 comprising a release foil 7, a layer of pressure sensitive adhesive 3, a sheet of oriented integrated high performance polymers 2 and a bonding layer 4, wherein the plasma treatment of the sheet of oriented integrated high performance polymers is indicated with reference number 8. Fig 17 shows a film of high performance polymers 150 comprising an array of unidirectional aligned fibers 5, a bonding layer 4, a layer of pressure sensitive adhesive 3 and a release foil 7, wherein the plasma treatment of the sheet of oriented integrated high performance polymers is indicated with reference number 8.
Examples of types of pressure sensitive adhesive, unidirectional aligned fibers, bonding layer, anti sticking surface or layer and oriented integrated high performance polymers have been mentioned before.
Example 1: Ultra high molecular weight polyethylene (UHMWPE) in particulate form is compacted to form a sheet of integrated UHMWPE. Said sheet of integrated UHMWPE is stretched 140 times to form a sheet of oriented integrated UHMWPE. This process of compacting and stretching is done in a continuous process. After thus forming the sheet of oriented integrated UHMWPE an acrylic based pressure sensitive adhesive (PSA) is applied to one side of said sheet, and a release foil of waxpaper is applied to the PSA. Finally the composite of the sheet of oriented integrated UHMWPE, pressure sensitive adhesive and release foil is wound up to form a roll. This construction can be found in Figure 14.
Example 2: Ultra high molecular weight polyethylene (UHMWPE) in particulate form is compacted to form a sheet of integrated UHMWPE. Said sheet of integrated UHMWPE is stretched 140 times to form a sheet of oriented integrated UHMWPE. This process of compacting and stretching is done in a continuous process After thus forming the sheet of oriented integrated UHMWPE, one surface of said sheet is exposed to a plasma treatment. The plasma treatment is done to enhance the adhesion of a pressure sensitive adhesive to the surface thus treated. Next, an acrylic based pressure sensitive adhesive (PSA) is applied to plasma exposed surface of the sheet of oriented integrated UHMWPE, and a release foil of waxpaper is applied to the PSA. Finally the composite of the sheet of oriented integrated UHMWPE, pressure sensitive adhesive and release foil is wound up to form a roll. This construction can be found in Figure 15.
Example 3: Ultra high molecular weight polyethylene (UHMWPE) in particulate form is compacted to form a sheet of integrated UHMWPE. Said sheet of integrated UHMWPE is stretched 140 times to form a sheet of oriented integrated UHMWPE. This process of compacting and stretching is done in a continuous process. Next, a polyethylene bonding layer is applied to one surface of the sheet of oriented integrated UHMWPE. Next, the other surface of said sheet, i.e. the surface without a bonding layer, is exposed to a plasma treatment. The plasma treatment is done to enhance the adhesion of a pressure sensitive adhesive (PSA) to the surface thus treated. Next, an acrylic based pressure sensitive adhesive is applied to plasma exposed surface of the sheet of oriented integrated UHMWPE, and a release foil of waxpaper is applied to the PSA. Finally composite of the sheet of oriented integrated UHMWPE, pressure sensitive adhesive and release foil is wound up to form a roll. This construction can be found in Figure 16.
Example 4: Ultra high molecular weight polyethylene (UHMWPE) fibres are spread and aligned adjacent to each other. Next, a bonding layer of ethylene vinyl acetate (EVA) is applied to one surface of the array of aligned UHMWPE fibers forming a sheet of oriented integrated UHMWPE. The process of aligning UHMWPE fibres is done in a continuous process. After thus forming the sheet of oriented integrated UHMWPE, one surface of said sheet is exposed to a plasma treatment. The plasma treatment is done to enhance the adhesion of a pressure sensitive adhesive (PSA) to the surface thus treated. Next, an acrylic based pressure sensitive adhesive is applied to plasma exposed surface of the sheet of oriented integrated UHMWPE, and a release foil of waxpaper is applied to the PSA. Finally the composite of the sheet of oriented integrated UHMWPE, pressure sensitive adhesive and release foil is wound up to form a roll. This construction can be found in Figure 17.

Claims (17)

1. Werkwijze ter vervaardiging van een film van high performance polymeren, waarbij de werkwijze de stappen omvat van: a) het vormen van een sheet van georiënteerde, geïntegreerde high performance polymeren, b) het aanbrengen van een voor druk gevoelig hechtmiddel op ten minste een zijde van de sheet van georiënteerde, geïntegreerde high performance polymeren, c) het opwikkelen van de sheet van georiënteerde, geïntegreerde high performance polymeren, voorzien van voor druk gevoelig hechtmiddel, ter vorming van een rol.A method of manufacturing a film of high performance polymers, the method comprising the steps of: a) forming a sheet of oriented, integrated high performance polymers, b) applying a pressure sensitive adhesive to at least one side of the sheet of oriented, integrated high performance polymers, c) winding up the sheet of oriented, integrated high performance polymers, provided with pressure sensitive adhesive, to form a roll. 2. Werkwijze volgens conclusie 1, waarbij stap a) de volgende stappen omvat: A1) het verschaffen van high performance polymeren in deeltjesachtige vorm, A2) het compacteren van de high performance polymeren ter vorming van een sheet van geïntegreerde high performance polymeren, en A3) het rekken van de sheet van geïntegreerde high performance polymeren ter vorming van voornoemde sheet van georiënteerde, geïntegreerde high performance polymeren.The method of claim 1, wherein step a) comprises the following steps: A1) providing high performance polymers in particulate form, A2) compacting the high performance polymers to form a sheet of integrated high performance polymers, and A3 stretching the sheet of integrated high performance polymers to form the aforementioned sheet of oriented, integrated high performance polymers. 3. Werkwijze volgens conclusie 1, waarbij stap a) de volgende stappen omvat: A4) het verschaffen van een aantal individuele high performance vezels, A5) het rangschikken van voornoemd aantal individuele high performance vezels, A6) het aanbrengen van een bindingslaag op ten minste een zijde van de gerangschikte reeks high performance vezels ter vorming van voornoemde sheet van georiënteerde, geïntegreerde high performance polymeren.The method of claim 1, wherein step a) comprises the following steps: A4) providing a plurality of individual high performance fibers, A5) arranging said plurality of individual high performance fibers, A6) applying a bonding layer to at least one side of the arranged series of high performance fibers to form the aforementioned sheet of oriented, integrated high performance polymers. 4. Werkwijze volgens conclusie 2, waarbij het high performance polymeer ultra-hoog molecuulgewicht polyetheen (UHMWPE) is.The method of claim 2, wherein the high performance polymer is ultra-high molecular weight polyethylene (UHMWPE). 5. Werkwijze volgens conclusies 1 en 3, waarbij de high performance polymeren zijn gekozen uit de groep van ultra-hoog molecuulgewicht polyetheen (UHMWPE), polyetheen, polypropeen, para-aramide, poly(p-fenyl-2,6-benzo-bisoxazool) (PBO), koolstof en nylon, of een combinatie hiervan, bij voorkeur ultra-hoog molecuulgewicht polyetheen.The method according to claims 1 and 3, wherein the high performance polymers are selected from the group of ultra-high molecular weight polyethylene (UHMWPE), polyethylene, polypropylene, para-aramid, poly (p-phenyl-2,6-benzo bisoxazole) ) (PBO), carbon and nylon, or a combination thereof, preferably ultra-high molecular weight polyethylene. 6. Werkwijze volgens conclusie 3 en 5, waarbij ten minste 75% van de high performance vezels in dezelfde richting zijn gerangschikt.The method of claims 3 and 5, wherein at least 75% of the high performance fibers are arranged in the same direction. 7. Werkwijze volgens een of meer van de voorgaande conclusies, waarbij de film van high performance polymeren een enkelvoudige sheet van georiënteerde, geïntegreerde high performance polymeren omvat.The method of any one of the preceding claims, wherein the high performance polymer film comprises a single sheet of oriented, integrated high performance polymers. 8. Werkwijze volgens een of meer van de voorgaande conclusies, waarbij het voor druk gevoelige hechtmiddel wordt aangebracht over ten minste 80% van het oppervlak van ten minste een zijde van de sheet van georiënteerde, geïntegreerde high performance polymeren.The method of any one of the preceding claims, wherein the pressure sensitive adhesive is applied over at least 80% of the surface of at least one side of the sheet of oriented, integrated high performance polymers. 9. Werkwijze volgens een of meer van de voorgaande conclusies, waarbij het voor druk gevoelige hechtmiddel wordt gekozen uit de groep van acrylverbindingen, bio-gebaseerde acrylaat, butylrubber, etheen-vinylacetaat (EVA), natuurlijke rubber, nitrillen, siliconenrubbers, styreenblokcopolymeren (SBC), styreen-butadieen-styreen (SBS), styreen-etheen/buteen-styreen (SEBS), styreen-etheen/propeen (SEP), styreen-isopreen-styreen (SIS) en vinylethers, of mengsel hierrvan.The method according to any of the preceding claims, wherein the pressure sensitive adhesive is selected from the group of acrylics, bio-based acrylate, butyl rubber, ethylene-vinyl acetate (EVA), natural rubber, nitriles, silicone rubbers, styrene block copolymers (SBC) ), styrene-butadiene-styrene (SBS), styrene-ethylene / butene-styrene (SEBS), styrene-ethylene / propylene (SEP), styrene-isoprene-styrene (SIS) and vinyl ethers, or mixtures thereof. 10. Werkwijze volgens een of meer van de voorgaande conclusies, verder omvattende het aanbrengen van een bindingslaag op de sheet van georiënteerde, geïntegreerde high performance polymeren.The method of any one of the preceding claims, further comprising applying a bonding layer to the sheet of oriented, integrated high performance polymers. 11. Werkwijze volgens conclusie 10, waarbij de bindingslaag uit een thermoplastisch materiaal bestaat.The method of claim 10, wherein the bonding layer consists of a thermoplastic material. 12. Werkwijze volgens conclusie 10, waarbij de bindingslaag uit een thermohardend materiaal bestaat.The method of claim 10, wherein the bonding layer consists of a thermosetting material. 13. Werkwijze volgens conclusies 10-12, verder omvattende het aanbrengen van een antihechtend oppervlak op het buitenoppervlak van de bindingslaag.The method of claims 10-12, further comprising applying an anti-adhesive surface to the outer surface of the bonding layer. 14. Werkwijze volgens conclusies 10-12, waarbij een voor druk gevoelig hechtmiddel wordt aangebracht op het buitenoppervlak van de bindingslaag.The method of claims 10-12, wherein a pressure sensitive adhesive is applied to the outer surface of the bonding layer. 15. Werkwijze volgens een of meer van de voorgaande conclusies, waarbij een verwijderbare folie wordt aangebracht op een of meer lagen voor druk gevoelig hechtmiddel.The method of any one of the preceding claims, wherein a removable film is applied to one or more layers of pressure sensitive adhesive. 16. Film van high performance polymeren verkregen volgens de werkwijze volgens een of meer van de voorgaande conclusies, waarbij de gemiddelde laagdikte van de laag voor drukgevoelig hechtmiddel, grenzend aan de sheet van georiënteerde, geïntegreerde high performance polymeren, minder dan 200 μηι bedraagt.A film of high performance polymers obtained according to the method according to one or more of the preceding claims, wherein the average layer thickness of the pressure sensitive adhesive layer adjacent to the sheet of oriented, integrated high performance polymers is less than 200 μηι. 17. Film van high performance polymeren verkregen volgens de werkwijze volgens een van de voorgaande conclusies, waarbij de sheet van georiënteerde geïntegreerde high performance polymeren een treksterkte van ten minste 1,0 GPa, een rekmodulus van ten minste 40 GPa, een molecuulgewicht van ten minste 500.000 en een sheetbreedte van ten minste 2 mm bezit.A film of high performance polymers obtained according to the method according to any of the preceding claims, wherein the sheet of oriented integrated high performance polymers has a tensile strength of at least 1.0 GPa, an elongation modulus of at least 40 GPa, a molecular weight of at least 500,000 and a sheet width of at least 2 mm.
NL2011548A 2013-10-03 2013-10-03 A method for manufacturing a film of high performance polymers. NL2011548C2 (en)

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