GB2025315A - Plastics Laminate - Google Patents

Plastics Laminate Download PDF

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Publication number
GB2025315A
GB2025315A GB7829573A GB7829573A GB2025315A GB 2025315 A GB2025315 A GB 2025315A GB 7829573 A GB7829573 A GB 7829573A GB 7829573 A GB7829573 A GB 7829573A GB 2025315 A GB2025315 A GB 2025315A
Authority
GB
United Kingdom
Prior art keywords
layer
activated carbon
laminate according
laminate
gases
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Withdrawn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
GB7829573A
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.)
Kingsdown Medical Consultants Ltd
Original Assignee
Kingsdown Medical Consultants 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 Kingsdown Medical Consultants Ltd filed Critical Kingsdown Medical Consultants Ltd
Priority to GB7829573A priority Critical patent/GB2025315A/en
Priority to GB7924253A priority patent/GB2029764A/en
Publication of GB2025315A publication Critical patent/GB2025315A/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Withdrawn legal-status Critical Current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
    • B32B27/14—Layered products comprising a layer of synthetic resin next to a particulate layer
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F5/00—Orthopaedic methods or devices for non-surgical treatment of bones or joints; Nursing devices; Anti-rape devices
    • A61F5/44—Devices worn by the patient for reception of urine, faeces, catamenial or other discharge; Portable urination aids; Colostomy devices
    • A61F5/441—Devices worn by the patient for reception of urine, faeces, catamenial or other discharge; Portable urination aids; Colostomy devices having venting or deodorant means, e.g. filters ; having antiseptic means, e.g. bacterial barriers
    • 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
    • B32B27/28—Layered products comprising a layer of synthetic resin comprising synthetic resins not wholly covered by any one of the sub-groups B32B27/30 - B32B27/42
    • 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
    • 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
    • B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
    • B32B9/005—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising one layer of ceramic material, e.g. porcelain, ceramic tile
    • B32B9/007—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising one layer of ceramic material, e.g. porcelain, ceramic tile comprising carbon, e.g. graphite, composite carbon
    • 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
    • B32B2250/03—3 layers
    • 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
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10—Inorganic fibres
    • B32B2262/106—Carbon fibres, e.g. graphite fibres
    • 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
    • B32B2264/00—Composition or properties of particles which form a particulate layer or are present as additives
    • B32B2264/10—Inorganic particles
    • B32B2264/107—Ceramic
    • B32B2264/108—Carbon, e.g. graphite particles
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/724—Permeability to gases, adsorption
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/726—Permeability to liquids, absorption
    • B32B2307/7265—Non-permeable
    • 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
    • B32B2535/00—Medical equipment, e.g. bandage, prostheses or catheter

Landscapes

  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Nursing (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Epidemiology (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)

Abstract

A synthetic plastics laminate consists of, or includes, three layers, the first layer 10 being a layer of plastics material which is permeable to gases and impermeable to liquids e.g. chemically treated polyvinyl chloride, the second layer 12 being a layer of activated carbon cloth or activated carbon particles, and the third layer 16 being a layer of material which is the same as or different from the first layer and if the latter is permeable to gases and impermeable to liquids. <IMAGE>

Description

SPECIFICATION Plastics Laminate This invention relates to a plastics laminate.
According to the invention, there is provided a plastics laminate consisting of, or including, three layers, the first layer being a layer of plastics material which is permeable to gases and impermeable to liquids, the second layer being a layer of activated carbon cloth or activated carbon particles, and the third layer being a layer of material which is the same as or different from the first layer and if the latter is permeable to gases and impermeable to liquids.
Such a laminate is particularly although not exclusively useful in the manufacture of ostomy appliances, for example ostomy bag covers, and ostomy bags.
One example of a suitable plastics material for the first and third layers is a chemically treated polyvinyl chloride known commercially by the name of 'MICROPORE'.
According to a preferred embodiment of the invention, there is provided an ostomy bag comprising a pair of facing walls of plastics material welded together around their periphery, and one of which has a hole therethrough to receive the stoma of a user of the bag, in which one or both of the walls of the bag are constituted by a laminate as specified in the second paragraph of this specification.
In one embodiment of the invention the third layer may be a layer of adhesive material, and this may be applied by spraying onto a sheet or strip which forms the first layer, which extends generally horizontally, and which carries activated carbon particles uniformly distriputed thereover.
In this case the adhesive serves to secure and locate the particles on the first layer.
In another embodiment of the invention the first and third layers are the aforesaid 'MICROPORE' material and the second layer is activated carbon particles. In yet another embodiment of the invention, one or both of the first and third layers is constituted by thin polythene.
Figure 1 illustrates one example of a laminate according to the invention, and Figure 2 illustrates diagrammatically one method of making a laminate according to the invention.
The laminate shown in Figure 1 consists of a first layer 10 of a plastics material which is permeable to gases and impermeable to liquids, a second layer 12 of activated carbon particles, and a third layer 14 which is the same material-but not necessarily the same thickness-as the first layer. In the use of such a laminate as one wall of an ostomy bag, gases (flatus) which accumulate in the bag, can escape by direct passage through the wall and in doing so have substantially all the noxious smells removed therefrom by the carbon particles, and yet the liquid and solid contents of the bag are securely retained therein.
One method of making a laminate is shown in Figure 2. A plastics extruder 20 of conventional construction extrudes, generally horizontally, a layer 22 which constitutes the first layer. Just downstream of the extruder 20 is located a hopper 24 containing activated carbon particles, and the mouth 26 of this hopper is adjacent to a distributor 28 which ensures that the particles are distributed over the whole area of the first layer. A second extruder 30 is located downstream of the hopper 24 and extrudes a layer of plastics material on top of the carbon particles, to form the third layer. A pair of rolls 32, or other suitable mechanism, presses assembly together to form the resulting laminate 34.
In an alternative method, the carbon particles may be electrostatically distributed on the first layer before the third layer is applied thereto, and in this case it may be preferred to apply the third layer by spraying on adhesive.
To the best of the Applicant's knowledge and belief, there has been no prior proposal to effect a filtering or deodorising of gas by passing it through a triple-layer integral laminate of which the middle layer is activated carbon particles or cloth, nor has there been any proposal to, nor practical method to, manufacture of a laminate as defined herein.

Claims (8)

Claims Features of the invention can be defined as follows:
1. A plastics laminate consisting of, or including, three layers, the first layer being a layer of plastics material which is permeable to gases and impermeable to liquids, the second layer being a layer of activated carbon cloth or activated carbon particles, and the third layer being a layer of material which is the same as or different from the first layer and if the latter is permeable to gases and impermeable to liquids.
2. A laminate according to clause 1 in which the first layer is chemically treated polyvinyl chloride.
3. A laminate according to clause 1 or 2 in which the third layer is chemically treated polyvinyl chloride.
4. A laminate according to clause 1 or 2 in which the third layer is an adhesive.
5. A laminate according to any one of clauses 1-4 in which the second layer is of activated carbon particles.
6. A laminate according to any one of clauses 1-4 in which the second layer is of activated carbon cloth.
7. A laminate according to clause 1 in which the first and/or the third layer is thin polythene (i.e. thickness less than 0.2 mum?).
8. An ostomy bag which includes a wall made of a laminate according to any one of clauses 1 - 7.
GB7829573A 1978-07-12 1978-07-12 Plastics Laminate Withdrawn GB2025315A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB7829573A GB2025315A (en) 1978-07-12 1978-07-12 Plastics Laminate
GB7924253A GB2029764A (en) 1978-07-12 1979-07-12 Plastics Laminate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB7829573A GB2025315A (en) 1978-07-12 1978-07-12 Plastics Laminate

Publications (1)

Publication Number Publication Date
GB2025315A true GB2025315A (en) 1980-01-23

Family

ID=10498381

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7829573A Withdrawn GB2025315A (en) 1978-07-12 1978-07-12 Plastics Laminate

Country Status (1)

Country Link
GB (1) GB2025315A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2135935A (en) * 1983-02-28 1984-09-12 Richard Louis Bailly Moulded odour-absorbing laminate
GB2165799A (en) * 1984-10-24 1986-04-23 Stephen Anthony Rawlings Pad for absorption of body odour
GB2167053A (en) * 1984-11-15 1986-05-21 Charcoal Cloth Ltd Products containing charcoal and their use in water purification
WO2001015747A1 (en) * 1999-08-27 2001-03-08 Calgon Carbon Corporation An odor removing article and method for making same

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2135935A (en) * 1983-02-28 1984-09-12 Richard Louis Bailly Moulded odour-absorbing laminate
GB2165799A (en) * 1984-10-24 1986-04-23 Stephen Anthony Rawlings Pad for absorption of body odour
GB2167053A (en) * 1984-11-15 1986-05-21 Charcoal Cloth Ltd Products containing charcoal and their use in water purification
WO2001015747A1 (en) * 1999-08-27 2001-03-08 Calgon Carbon Corporation An odor removing article and method for making same

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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)