GB2030504A - Fibre-reinforced expanded plastics material - Google Patents

Fibre-reinforced expanded plastics material Download PDF

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Publication number
GB2030504A
GB2030504A GB7838818A GB7838818A GB2030504A GB 2030504 A GB2030504 A GB 2030504A GB 7838818 A GB7838818 A GB 7838818A GB 7838818 A GB7838818 A GB 7838818A GB 2030504 A GB2030504 A GB 2030504A
Authority
GB
United Kingdom
Prior art keywords
plastics material
packaging
expanded plastics
fibrous
present
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Withdrawn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
GB7838818A
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.)
Wigley & Sons
Original Assignee
Wigley & Sons
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 Wigley & Sons filed Critical Wigley & Sons
Priority to GB7838818A priority Critical patent/GB2030504A/en
Publication of GB2030504A publication Critical patent/GB2030504A/en
Withdrawn legal-status Critical Current

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
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
    • B29C44/12—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
    • B65D65/38—Packaging materials of special type or form

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wrappers (AREA)

Abstract

Expanded plastics material, e.g. polyurethane foam, is reinforced with fibrous material for use in packaging.

Description

SPECIFICATION Materials The present invention relates to materials. In particular the present invention relates to materials for use in packaging.
The present invention provides a material comprising an expanded plastics material reinforced with a fibrous material.
Preterably the expanded plastics material is a urethane foam such as a polyurethane foam which is conveniently a semi-flexible polyurethane foam.
Examples of fibrous material for reinforcing the plastics material are: wood fibre, glass fibre, nylon, shredded paper and scrim fibre. In fact most fibrous materials are suitable for use as reinforcing.
Plastics material, particularly polyurethane foam, is increasingly being used for packaging articles.
However such packaging in itself provides little or no protection for a packaged article where the latter is of considerable weight or subject to extensive impact shock which might occur during handling of the packaged article. The present invention provides a material which may be used for packaging and which has an improved point loading or impact strength which can be as high as three or more times that of pure polyurethane foam.
Typical densities of expanded plastics material used are 6 to 90 Kg/mu23 particularly 6.4 and 9.6 Kg/m3 but can be as high as 53 Kgm/m3 or more.
The quantity of fibre used per m3 of expanded plastics material depends upon the intended application of the material but a typical range is up to 5 Kgm/m3 of expanded plastics material. Typical amounts are 2.88 and 4.96 Kgm/m3 although the fibrous material can occupy up to as much as 50% of the total volume of the material according to the invention.
Distribution of the fibrous material throughout the expanded plastics material may be varied to provided localised ares of increased strength, if desired.
The material according to the invention can be prepared simply py injecting the expanded plastics material into a mould containing the fibrous material. The latter can, of course be blown in with the plastics material, if desired. Inserts of suitable material such as plastics, plywood or metal can be included in the mould to provide localised strengthening ofthe material.
When used for packaging an article the material according to the present invention can be free moulded around the article with the latter in a suitable container such as cardboard box or a crate.
Sheets of the material may also be moulded, such sheets being typically 1.25 to 7.5 cm thick.
While the above description relates in part to packaging it will be understood that the material according to the present invention has numerous other uses.
1. A material comprising an expanded plastics material reinforced with a fibrous material.
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (1)

  1. **WARNING** start of CLMS field may overlap end of DESC **.
    SPECIFICATION Materials The present invention relates to materials. In particular the present invention relates to materials for use in packaging.
    The present invention provides a material comprising an expanded plastics material reinforced with a fibrous material.
    Preterably the expanded plastics material is a urethane foam such as a polyurethane foam which is conveniently a semi-flexible polyurethane foam.
    Examples of fibrous material for reinforcing the plastics material are: wood fibre, glass fibre, nylon, shredded paper and scrim fibre. In fact most fibrous materials are suitable for use as reinforcing.
    Plastics material, particularly polyurethane foam, is increasingly being used for packaging articles.
    However such packaging in itself provides little or no protection for a packaged article where the latter is of considerable weight or subject to extensive impact shock which might occur during handling of the packaged article. The present invention provides a material which may be used for packaging and which has an improved point loading or impact strength which can be as high as three or more times that of pure polyurethane foam.
    Typical densities of expanded plastics material used are 6 to 90 Kg/mu23 particularly 6.4 and 9.6 Kg/m3 but can be as high as 53 Kgm/m3 or more.
    The quantity of fibre used per m3 of expanded plastics material depends upon the intended application of the material but a typical range is up to 5 Kgm/m3 of expanded plastics material. Typical amounts are 2.88 and 4.96 Kgm/m3 although the fibrous material can occupy up to as much as 50% of the total volume of the material according to the invention.
    Distribution of the fibrous material throughout the expanded plastics material may be varied to provided localised ares of increased strength, if desired.
    The material according to the invention can be prepared simply py injecting the expanded plastics material into a mould containing the fibrous material. The latter can, of course be blown in with the plastics material, if desired. Inserts of suitable material such as plastics, plywood or metal can be included in the mould to provide localised strengthening ofthe material.
    When used for packaging an article the material according to the present invention can be free moulded around the article with the latter in a suitable container such as cardboard box or a crate.
    Sheets of the material may also be moulded, such sheets being typically 1.25 to 7.5 cm thick.
    While the above description relates in part to packaging it will be understood that the material according to the present invention has numerous other uses.
    1. A material comprising an expanded plastics material reinforced with a fibrous material.
GB7838818A 1978-09-30 1978-09-30 Fibre-reinforced expanded plastics material Withdrawn GB2030504A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7838818A GB2030504A (en) 1978-09-30 1978-09-30 Fibre-reinforced expanded plastics material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB7838818A GB2030504A (en) 1978-09-30 1978-09-30 Fibre-reinforced expanded plastics material

Publications (1)

Publication Number Publication Date
GB2030504A true GB2030504A (en) 1980-04-10

Family

ID=10500024

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7838818A Withdrawn GB2030504A (en) 1978-09-30 1978-09-30 Fibre-reinforced expanded plastics material

Country Status (1)

Country Link
GB (1) GB2030504A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1007314C2 (en) * 1997-10-20 1999-04-21 Syntech Holdings Bv Molded element, especially a floor plate, composed of binder and ground, shredded banknotes as a filler
US6379815B1 (en) * 1997-10-20 2002-04-30 Syntech Holdings B.V. Moulded element, in particular in the shape of a plate, which is a compressed mixture of binder and filler, a method and a device for manufacturing such a moulded elements, as well as floor plates, a sports hall provided with such floor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1007314C2 (en) * 1997-10-20 1999-04-21 Syntech Holdings Bv Molded element, especially a floor plate, composed of binder and ground, shredded banknotes as a filler
US6379815B1 (en) * 1997-10-20 2002-04-30 Syntech Holdings B.V. Moulded element, in particular in the shape of a plate, which is a compressed mixture of binder and filler, a method and a device for manufacturing such a moulded elements, as well as floor plates, a sports hall provided with such floor

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Legal Events

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