GB2163096A - Flexible laminated plastics sheet material - Google Patents

Flexible laminated plastics sheet material Download PDF

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Publication number
GB2163096A
GB2163096A GB08420935A GB8420935A GB2163096A GB 2163096 A GB2163096 A GB 2163096A GB 08420935 A GB08420935 A GB 08420935A GB 8420935 A GB8420935 A GB 8420935A GB 2163096 A GB2163096 A GB 2163096A
Authority
GB
United Kingdom
Prior art keywords
sheet
reticular structure
plastics
adhesive
deforming
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Withdrawn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
GB08420935A
Other versions
GB8420935D0 (en
Inventor
Michael Peter Geor Mandt-Rauch
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.)
MANDT RAUCH MICHAEL PETER GEOR
Original Assignee
MANDT RAUCH MICHAEL PETER GEOR
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 MANDT RAUCH MICHAEL PETER GEOR filed Critical MANDT RAUCH MICHAEL PETER GEOR
Priority to GB08420935A priority Critical patent/GB2163096A/en
Publication of GB8420935D0 publication Critical patent/GB8420935D0/en
Publication of GB2163096A publication Critical patent/GB2163096A/en
Withdrawn legal-status Critical Current

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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
    • B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/304—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl halide (co)polymers, e.g. PVC, PVDC, PVF, PVDF
    • 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
    • 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
    • B32B7/02—Physical, chemical or physicochemical properties
    • B32B7/022—Mechanical properties
    • 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
    • B32B7/02—Physical, chemical or physicochemical properties
    • B32B7/027—Thermal properties
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/24—All layers being polymeric
    • 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
    • B32B2305/00—Condition, form or state of the layers or laminate
    • B32B2305/38—Meshes, lattices or nets
    • 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
    • B32B2327/00—Polyvinylhalogenides
    • B32B2327/06—PVC, i.e. polyvinylchloride
    • 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

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Laminated Bodies (AREA)

Abstract

A flexible laminated plastics sheet material has laminae comprising a first sheet of plastics material such as polyester, a reticular structure such as polyester yarn netting, and a second sheet of plastics material, such as polyvinylchloride, having a melting point lower than that of the material of the first sheet. The second sheet is more flexible than the first sheet and is thermally deformed to fill the spaces in the netting. The first and second sheets are bonded together by adhesive.

Description

SPECIFICATION Flexible laminated plastics sheet material The present invention relates to a flexible laminated plastics sheet material, especially a material intended for use as a sail panel.
The use of plastics sheet material for watercraft sails or aircraft aerofoils conveys the advantages of relatively low production and material costs, good flexibility and low weight. However, the material is vulnerable to damage by tearing and one method of increasing resistance to damage of this kind is formation of the material as a laminated panel with an included reticular structure of fabric or synthetic material, for example polyester yarn netting sandwiched between two outer polyester sheets. In this construction, however, the polyester sheeting is bulged outwardly in the region of the netting so as to form intersecting ridges in the surfaces of the finished product. These ridges constitute chafe points at which the polyester sheeting and then the netting can be abraded and eventually worn through.In addition, to ensure satisfactory flexibility, this material includes a relatively large amount of adhesive to bond transparent polyester sheets and this can reduce the clarity of the product.
According to a first aspect of the present invention there is provided a flexible laminated plastics sheet material, the laminate of which comprise a first sheet of plastics material, a reticular structure, and a second sheet of plastics material having a melting point lower than that of the material of the first sheet, the second sheet being more flexible than the first sheet and being thermally deformed to fill the interstices of the reticular structure.
Preferably, the material of the first sheet is polyester and that of the second sheet is polyvinylchloride. The reticular structure may be high tenacity polyester yarn netting.
The sheet material can comprise a further such first sheet of plastics material, for example polyester, arranged at a side of the structure opposite to the first-mentioned first sheet.
The or each first sheet is preferably bonded to the second sheet by an adhesive, for example a pressure-sensitive acrylate adhesive or a polyurethane adhesive.
According to a second aspect of the invention there is provided a method of manufacturing a flexible laminated plastics sheet, the method comprising the steps of providing a first sheet of plastics material, a reticular structure, and a second sheet of plastics material having a melting point lower than that of the material of the first sheet, the second sheet being more flexible than the first sheet, thermally deforming the second sheet to fill the interstices of the reticular structure, and bonding the first sheet to the second sheet.
The material composition of the sheets and the reticular structure can be as described for the first aspect of the invention.
Expediently the deforming and bonding steps are carried out at the same time, for example by coating the first sheet with a thermosetting adhesive and passing the coated first sheet, the reticular structure and the second sheet in superposed state through the nip of a hot roller pair, the heat transmitted and pressure exerted by the roller pair being such as to effect or initiate setting of the adhesive and to thermally deform the second sheet without deforming the first sheet. Either the reticular structure or the second sheet can be placed against the adhesive coating of the first sheet, the first sheet thus being glued to the second sheet or to both the second sheet and the structure.
A further such adhesive-coated first sheet can also be passed through the roller pair to sandwich the structure and the second sheet between the two first sheets. In addition a further such second sheet can be placed against a side of the structure opposite to the first-mentioned second sheet, the two second sheets being fused together in the deforming step.
The deforming and bonding steps can be carried out separately, for example by initially gluing the first and second sheets together or by co-extrusion of these sheets, after which the reticular structure is placed against the second sheet and the latter deformed by, for example, passing the sheet composite and the structure through a hot roller pair.
The resulting sheet material has a more planar form compared with known laminated materials incorporating netting reinforcement, the embedding of the reticular structure in a plastics material sheet serving to ensure that the outlying sheet is not bulged to the extent of creating prominent chafe points. In addition, the softer nature of the embedding sheet means that a lesser quantity of adhesive need be used for adhesive bonding of transparent laminae and consequently the optical clarity of the finished product is enhanced.
1. A flexible laminated plastics sheet material, the laminae of which comprise a first sheet of plastics material, a reticular structure, and a second sheet of plastics material having a melting point lower than that of the material of the first sheet, the second sheet being more flexible than the first sheet and being thermally deformed to fill the interstices of the reticular structure.
2. A sheet material as claimed in claim 1, wherein the material of the first sheet is polyester and that of the second sheet polyvinylchloride.
3. A sheet material as claimed in either claim 1 or claim 2, wherein the reticular structure is high tenacity polyester yarn netting.
4. A sheet material as claimed in any one of the preceding claims, comprising a further such first sheet of plastics material arranged at a side of the reticular structure opposite to the first-mentioned sheet.
5. A sheet material as claimed in claim 4, wherein the material of said further first sheet is polyester.
6. A sheet material as claimed in any one of the preceding claims, wherein the or each first sheet of plastics material, as the case may be, is bonded to
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (19)

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION Flexible laminated plastics sheet material The present invention relates to a flexible laminated plastics sheet material, especially a material intended for use as a sail panel. The use of plastics sheet material for watercraft sails or aircraft aerofoils conveys the advantages of relatively low production and material costs, good flexibility and low weight. However, the material is vulnerable to damage by tearing and one method of increasing resistance to damage of this kind is formation of the material as a laminated panel with an included reticular structure of fabric or synthetic material, for example polyester yarn netting sandwiched between two outer polyester sheets. In this construction, however, the polyester sheeting is bulged outwardly in the region of the netting so as to form intersecting ridges in the surfaces of the finished product. These ridges constitute chafe points at which the polyester sheeting and then the netting can be abraded and eventually worn through.In addition, to ensure satisfactory flexibility, this material includes a relatively large amount of adhesive to bond transparent polyester sheets and this can reduce the clarity of the product. According to a first aspect of the present invention there is provided a flexible laminated plastics sheet material, the laminate of which comprise a first sheet of plastics material, a reticular structure, and a second sheet of plastics material having a melting point lower than that of the material of the first sheet, the second sheet being more flexible than the first sheet and being thermally deformed to fill the interstices of the reticular structure. Preferably, the material of the first sheet is polyester and that of the second sheet is polyvinylchloride. The reticular structure may be high tenacity polyester yarn netting. The sheet material can comprise a further such first sheet of plastics material, for example polyester, arranged at a side of the structure opposite to the first-mentioned first sheet. The or each first sheet is preferably bonded to the second sheet by an adhesive, for example a pressure-sensitive acrylate adhesive or a polyurethane adhesive. According to a second aspect of the invention there is provided a method of manufacturing a flexible laminated plastics sheet, the method comprising the steps of providing a first sheet of plastics material, a reticular structure, and a second sheet of plastics material having a melting point lower than that of the material of the first sheet, the second sheet being more flexible than the first sheet, thermally deforming the second sheet to fill the interstices of the reticular structure, and bonding the first sheet to the second sheet. The material composition of the sheets and the reticular structure can be as described for the first aspect of the invention. Expediently the deforming and bonding steps are carried out at the same time, for example by coating the first sheet with a thermosetting adhesive and passing the coated first sheet, the reticular structure and the second sheet in superposed state through the nip of a hot roller pair, the heat transmitted and pressure exerted by the roller pair being such as to effect or initiate setting of the adhesive and to thermally deform the second sheet without deforming the first sheet. Either the reticular structure or the second sheet can be placed against the adhesive coating of the first sheet, the first sheet thus being glued to the second sheet or to both the second sheet and the structure. A further such adhesive-coated first sheet can also be passed through the roller pair to sandwich the structure and the second sheet between the two first sheets. In addition a further such second sheet can be placed against a side of the structure opposite to the first-mentioned second sheet, the two second sheets being fused together in the deforming step. The deforming and bonding steps can be carried out separately, for example by initially gluing the first and second sheets together or by co-extrusion of these sheets, after which the reticular structure is placed against the second sheet and the latter deformed by, for example, passing the sheet composite and the structure through a hot roller pair. The resulting sheet material has a more planar form compared with known laminated materials incorporating netting reinforcement, the embedding of the reticular structure in a plastics material sheet serving to ensure that the outlying sheet is not bulged to the extent of creating prominent chafe points. In addition, the softer nature of the embedding sheet means that a lesser quantity of adhesive need be used for adhesive bonding of transparent laminae and consequently the optical clarity of the finished product is enhanced. CLAIMS
1. A flexible laminated plastics sheet material, the laminae of which comprise a first sheet of plastics material, a reticular structure, and a second sheet of plastics material having a melting point lower than that of the material of the first sheet, the second sheet being more flexible than the first sheet and being thermally deformed to fill the interstices of the reticular structure.
2. A sheet material as claimed in claim 1, wherein the material of the first sheet is polyester and that of the second sheet polyvinylchloride.
3. A sheet material as claimed in either claim 1 or claim 2, wherein the reticular structure is high tenacity polyester yarn netting.
4. A sheet material as claimed in any one of the preceding claims, comprising a further such first sheet of plastics material arranged at a side of the reticular structure opposite to the first-mentioned sheet.
5. A sheet material as claimed in claim 4, wherein the material of said further first sheet is polyester.
6. A sheet material as claimed in any one of the preceding claims, wherein the or each first sheet of plastics material, as the case may be, is bonded to the second sheet by an adhesive.
7. A sheet material as claimed in claim 6, wherein the adhesive is one of a pressure-sensitive acrylate adhesive and a polyurethane adhesive.
8. A method of manufacturing a flexible laminated plastics sheet material, the method comprising the steps of providing a first sheet of plastics material, a reticular structure, and a second sheet of plastics material having a melting point lower than that of the material of the first sheet, the second sheet being more flexible than the first sheet, thermally deforming the second sheet to fill the interstices of the reticular structure, and bonding the first sheet to the second sheet.
9. A method as claimed in claim 8, wherein the material of the first sheet is polyester and that of the second sheet polyvinylchloride.
10. A method as claimed in either claim 8 or claim 9, wherein the reticular structure is high te nacity polyester yarn netting.
11. A method as claimed in any one of claims 8 to 10, wherein the deforming and bonding steps are carried out at the same time.
12. A method as claimed in claim 11, wherein the deforming and bonding steps comprise coating the first sheet with a thermosettingadhesive and passing the heated first sheet, the reticular structure and the second sheet in superposed state through the nip of a hot roller pair transmitting such heat and exerting such pressure as to effect or initiate setting of the adhesive and to thermally deform the second sheet without deforming the first sheet.
13. A method as claimed in claim 12, comprising the step of passing a further such adhesivecoated first sheet through the roller pair to sandwich the reticular structure and the second sheet between the two first sheets.
14. A method as claimed in any one of the claims 8 to 13, comprising the step of placing a further such second sheet against a side of the reticular structure opposite to the first-mentioned second sheet before the deforming and bonding steps, the two second sheets being fused together in the deforming step.
15. A method as claimed in any one of claims 8 to 9, wherein the deforming step is carried out after the bonding step.
16. A method as claimed in claim 15, wherein the bonding step comprises gluing the first and second sheets together.
17. A method as claimed in claim 15, wherein the bonding step comprises coextruding the first and second sheets
18. A method as claimed in any one of claims 15 to 17, wherein the deforming step comprises placing the reticular structure against the second sheet and passing the bonded sheets and the reticular structure through a hot roller pair effecting deformation of the second sheet.
19. A flexible laminated plastics sheet material produced by a method as claimed in any one of claims 8 to 18.
GB08420935A 1984-08-17 1984-08-17 Flexible laminated plastics sheet material Withdrawn GB2163096A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08420935A GB2163096A (en) 1984-08-17 1984-08-17 Flexible laminated plastics sheet material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB08420935A GB2163096A (en) 1984-08-17 1984-08-17 Flexible laminated plastics sheet material

Publications (2)

Publication Number Publication Date
GB8420935D0 GB8420935D0 (en) 1984-09-19
GB2163096A true GB2163096A (en) 1986-02-19

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Family Applications (1)

Application Number Title Priority Date Filing Date
GB08420935A Withdrawn GB2163096A (en) 1984-08-17 1984-08-17 Flexible laminated plastics sheet material

Country Status (1)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000039230A1 (en) * 1998-12-26 2000-07-06 Myung Duk Kim Adhesive vinyl film and sticker with the same

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1482890A (en) * 1975-04-14 1977-08-17 Conwed Corp Reinforced thermoplastic foam sheet

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1482890A (en) * 1975-04-14 1977-08-17 Conwed Corp Reinforced thermoplastic foam sheet

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000039230A1 (en) * 1998-12-26 2000-07-06 Myung Duk Kim Adhesive vinyl film and sticker with the same

Also Published As

Publication number Publication date
GB8420935D0 (en) 1984-09-19

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WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)