GB2048769A - Polyethylene foam sheets or strips - Google Patents

Polyethylene foam sheets or strips Download PDF

Info

Publication number
GB2048769A
GB2048769A GB7916254A GB7916254A GB2048769A GB 2048769 A GB2048769 A GB 2048769A GB 7916254 A GB7916254 A GB 7916254A GB 7916254 A GB7916254 A GB 7916254A GB 2048769 A GB2048769 A GB 2048769A
Authority
GB
United Kingdom
Prior art keywords
film
roll
coated
strip
polyethylene foam
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Withdrawn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
GB7916254A
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.)
KWIKSEAL SEALANT PRODUCTS Ltd
Original Assignee
KWIKSEAL SEALANT PRODUCTS Ltd
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 KWIKSEAL SEALANT PRODUCTS Ltd filed Critical KWIKSEAL SEALANT PRODUCTS Ltd
Priority to GB7916254A priority Critical patent/GB2048769A/en
Publication of GB2048769A publication Critical patent/GB2048769A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • B32B27/08—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 synthetic resin
    • 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
    • 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
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • 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
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • 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
    • C09J7/26—Porous or cellular plastics
    • 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
    • B32B2266/025—Polyolefin
    • 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
    • B32B2367/00—Polyesters, e.g. PET, i.e. polyethylene terephthalate
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/04—Homopolymers or copolymers of ethene
    • C08L23/06—Polyethene

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Adhesive Tapes (AREA)
  • Laminated Bodies (AREA)

Abstract

A roll of adhesively coated polyethylene foam sheet is produced by feeding a roll of polyester film (1) previously coated with a release agent on one side to a coating head (2) at which a pressure-sensitive adhesive composition is applied to the side of the film coated with the release agent. After passage through a drying oven (3) the adhesive side of the film is brought into contact with a sheet of polyethylene foam from a roll (6) in the nip between rolls (4) and (5) and the laminate so formed is wound into a roll (7). The finished roll can be cut transversely to form reels of strip form. <IMAGE>

Description

SPECIFICATION Polyethylene foam sheets or strips This invention relates to the manufacture of polyethylene foam sheet or strip coated with an adhesive on one surface.
In accordance with the invention, a method of making a roll of adhesively coated polyethylene foam sheet comprises applying a coating of pressure sensitive adhesive to a surface of a polyester film which has been coated with a release agent, pressing a sheet of polyethylene foam onto the adhesively coated surface, and winding the laminated structure thus formed into a roll.
A preferred film is of polyethylene glycol terephthalate such as the material sold under the Registered Trade Marks "Mylar" or "Melinex". A very suitable film thickness is between 0.01 mm and 0.25 mm, preferably between 0.023 mm and 0.1 mm.
One release coating material is a solvent based silicone composition which gives a release characteristic force of up to 20 gms, and preferably not more than 10 gms, as measured by the following test method.
Tesa 1 55 tape, manufactured by Tesa Tapes Ltd., is laminated to a coated film at 700C for two hours. The laminate is then equilibrated in an atmosphere of 50% relative humidity at 230C and the force in grams required to peel the tape from the film at 1 800 per 25 mm width of tape is obtained using a tensometer at a cross-head speed of 1100 mm per minute.
A preferred embodiment of the invention will now be described with reference to the accompanying drawings.
A roll of polyester film 1 is fed to a coating head 2 at which a pressure-sensitive adhesive composition is applied to a surface of the film which has been pre-coated with the release agent.
The coated film is passed through an oven 3 to dry the adhesive compsoition and then fed into the nip between rolls 4 and 5 whereat a sheet of polyethylene foam from a roll 6 is pressed into contact with the exposed surface of the adhesive.
The laminated structure thus formed is then wound up to form a roll 7. Subsequently the roll can be cut transversely to form a plurality of reels of strip material to be used as sealing strip, the film being removed from the strip and the adhesive side of the strip applied to a substrate. It has been found that such a reel is quite stable since the successive coils of strip in the reel adhere together by static electrical attraction, whereas reels utilising other forms of interliner are not stable.
1. A method of making a roll of adhesively coated polyethylene foam sheet comprising the steps of applying a coating of pressure-sensitive adhesive composition to a surface of a polyester film which has been coated with a release agent, pressing a sheet of polyethylene foam onto the exposed surface of the adhesive, and winding the laminated structure thus formed into a roll.
2. A method according to claim 1, wherein the film is of a polyethylene glycol terephthalate composition.
3. A method according to claim 1 or 2, wherein the thickness of the film is 0.01 mm -0.25 mm.
4. A method according to claim 3, wherein the thickness of the film is 0.023 mm - 0.1 mm.
5. A method according to any of claims 1-4, wherein the release characteristics of the release coating on the film, as defined in the test method hereinbefore described, is from 0 to 20 gms.
6. A method according to claim 5, wherein the said release characteristic is from 0 to 10 gms.
7. A roll or-poiyethylene foam sheet or strip having a pressure-sensitive adhesive coating on one surface of the sheet or strip, and an interliner between the successive coils of sheet or strip comprising a film of polyester material coated with a release agent on the surface thereof in contact with the adhesive coating on the foam sheet or strip.
8. A method of making a roll of adhesively coated polyethylene foam sheet substantially as hereinbefore described with reference to the accompanying drawing.
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (8)

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION Polyethylene foam sheets or strips This invention relates to the manufacture of polyethylene foam sheet or strip coated with an adhesive on one surface. In accordance with the invention, a method of making a roll of adhesively coated polyethylene foam sheet comprises applying a coating of pressure sensitive adhesive to a surface of a polyester film which has been coated with a release agent, pressing a sheet of polyethylene foam onto the adhesively coated surface, and winding the laminated structure thus formed into a roll. A preferred film is of polyethylene glycol terephthalate such as the material sold under the Registered Trade Marks "Mylar" or "Melinex". A very suitable film thickness is between 0.01 mm and 0.25 mm, preferably between 0.023 mm and 0.1 mm. One release coating material is a solvent based silicone composition which gives a release characteristic force of up to 20 gms, and preferably not more than 10 gms, as measured by the following test method. Tesa 1 55 tape, manufactured by Tesa Tapes Ltd., is laminated to a coated film at 700C for two hours. The laminate is then equilibrated in an atmosphere of 50% relative humidity at 230C and the force in grams required to peel the tape from the film at 1 800 per 25 mm width of tape is obtained using a tensometer at a cross-head speed of 1100 mm per minute. A preferred embodiment of the invention will now be described with reference to the accompanying drawings. A roll of polyester film 1 is fed to a coating head 2 at which a pressure-sensitive adhesive composition is applied to a surface of the film which has been pre-coated with the release agent. The coated film is passed through an oven 3 to dry the adhesive compsoition and then fed into the nip between rolls 4 and 5 whereat a sheet of polyethylene foam from a roll 6 is pressed into contact with the exposed surface of the adhesive. The laminated structure thus formed is then wound up to form a roll 7. Subsequently the roll can be cut transversely to form a plurality of reels of strip material to be used as sealing strip, the film being removed from the strip and the adhesive side of the strip applied to a substrate. It has been found that such a reel is quite stable since the successive coils of strip in the reel adhere together by static electrical attraction, whereas reels utilising other forms of interliner are not stable. CLAIMS
1. A method of making a roll of adhesively coated polyethylene foam sheet comprising the steps of applying a coating of pressure-sensitive adhesive composition to a surface of a polyester film which has been coated with a release agent, pressing a sheet of polyethylene foam onto the exposed surface of the adhesive, and winding the laminated structure thus formed into a roll.
2. A method according to claim 1, wherein the film is of a polyethylene glycol terephthalate composition.
3. A method according to claim 1 or 2, wherein the thickness of the film is 0.01 mm -0.25 mm.
4. A method according to claim 3, wherein the thickness of the film is 0.023 mm - 0.1 mm.
5. A method according to any of claims 1-4, wherein the release characteristics of the release coating on the film, as defined in the test method hereinbefore described, is from 0 to 20 gms.
6. A method according to claim 5, wherein the said release characteristic is from 0 to 10 gms.
7. A roll or-poiyethylene foam sheet or strip having a pressure-sensitive adhesive coating on one surface of the sheet or strip, and an interliner between the successive coils of sheet or strip comprising a film of polyester material coated with a release agent on the surface thereof in contact with the adhesive coating on the foam sheet or strip.
8. A method of making a roll of adhesively coated polyethylene foam sheet substantially as hereinbefore described with reference to the accompanying drawing.
GB7916254A 1979-05-10 1979-05-10 Polyethylene foam sheets or strips Withdrawn GB2048769A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7916254A GB2048769A (en) 1979-05-10 1979-05-10 Polyethylene foam sheets or strips

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB7916254A GB2048769A (en) 1979-05-10 1979-05-10 Polyethylene foam sheets or strips

Publications (1)

Publication Number Publication Date
GB2048769A true GB2048769A (en) 1980-12-17

Family

ID=10505066

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7916254A Withdrawn GB2048769A (en) 1979-05-10 1979-05-10 Polyethylene foam sheets or strips

Country Status (1)

Country Link
GB (1) GB2048769A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2710089A1 (en) * 1993-09-17 1995-03-24 Hopenko Marie Francoise Acoustically insulating anti-lifting block
ES2120859A1 (en) * 1995-06-05 1998-11-01 Rodenas & Rivera Sa Tearing (ripping) strip for packages
GB2415152A (en) * 2004-06-15 2005-12-21 Jonathan Richard Booth Cushion tape

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2710089A1 (en) * 1993-09-17 1995-03-24 Hopenko Marie Francoise Acoustically insulating anti-lifting block
ES2120859A1 (en) * 1995-06-05 1998-11-01 Rodenas & Rivera Sa Tearing (ripping) strip for packages
GB2415152A (en) * 2004-06-15 2005-12-21 Jonathan Richard Booth Cushion tape

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Legal Events

Date Code Title Description
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)