AU7003896A - Method at the manufacturing of a recyclable product material - Google Patents
Method at the manufacturing of a recyclable product materialInfo
- Publication number
- AU7003896A AU7003896A AU70038/96A AU7003896A AU7003896A AU 7003896 A AU7003896 A AU 7003896A AU 70038/96 A AU70038/96 A AU 70038/96A AU 7003896 A AU7003896 A AU 7003896A AU 7003896 A AU7003896 A AU 7003896A
- Authority
- AU
- Australia
- Prior art keywords
- fibre
- product material
- ofthe
- matrix
- materials
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
- B29B17/0026—Recovery of plastics or other constituents of waste material containing plastics by agglomeration or compacting
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
Landscapes
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- Reinforced Plastic Materials (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
- Processing Of Solid Wastes (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
- Laminated Bodies (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Description
Method at the manufacturing of a recyclable product material
The present invention relates to a method for the manufacture of a recyclable product material, comprising at least one matrix material and at least one fibre material in order to achieve a predetermined strength within a predetermined strain rate interval in the product material.
Only recently has the handling of returnable plastic for recycling the latter assumed the priority which is desirable with regard, among other things, to environmental aspects, economic use of energy etc. People have begun, with some success, for example, to collect packaging film from agriculture and industry in order to manufacture granulate from the returned film.
WO 93/25609 and WO 94/09959, for example, are already known in this field. These publications describe methods and appliances for recycling returnable plastic and fibres.
One problem with this is the degree of contamination and the large number of different types of plastic with different melt indices exhibited by the returnable plastic, as a result of which the manufactured product material does not achieve the predetermined strength. The problem is related to the fact that the granulate nozzle and filtering equipment become clogged, which gives a very inhomogeneous final product.
In the above-mentioned publications there was no indication of any solution to this strength problem.
The object of the present invention is to achieve a predetermined strength for a predetermined strain rate interval in a recyclable product material of the said type, in order to thereby eliminate or at least reduce the effect of the said disadvantages associated with earlier manufacture of recyclable product material. To do this it is necessary to produce the greatest internal microstresses possible in the product
material. This is achieved according to the invention in that in different volume elements ofthe product material the matrix and fibre materials are selected so that the values for their moduli of elasticity, shear moduli and Poisson's ratios assume a discontinuous distribution, and that a continuous distribution of a display curve defining the fibre size ofthe product material exhibits symmetry.
According to another special characteristic ofthe invention the form factor of the fibre material/the mixed fibre materials, that is the ratio of fibre length to fibre diameter, exhibits a dispersion by means of which a majority of fibres can be made to bridge islands of inhomogeneities which would otherwise give rise to defective adhesion between the fibres.
As will be appreciated from a further special characteristic ofthe invention, the said distributions are preferably so great that the fact that one or more ofthe matrix/fibre materials is contaminated does not have a detrimental effect on the strength of the product material.
According to further characteristics ofthe invention the respective form factors of the said fibre material are such that the particle size ofthe contaminations is exceeded, that is to say the fact one or more ofthe matrix fibre materials is contaminated does not have a detrimental effect on the strength ofthe product material.
Further advantages ofthe invention will be evident from the following description of this, referring to the drawing in which fig.l is an example of a display curve in the method according to the invention. Fig.2 shows various volume elements in a product material.
The manufacture of a recyclable product material by the method according to the invention is done using equipment of conventional type familiar to the person skilled in the art, supplemented by measuring devices for checking the moduli of elasticity and moduli in shear of the matrix and fibre materials, together with the Poisson's ratios calculated from these values. Should the discontinuous distribution of the
above-mentioned quantities characteristic ofthe invention not be obtained, a manual or automatic correction is performed, whereupon that material in which the quantities did not attain the discontinuous distribution is fed back into the process, that is to say the material passes through the process one more time.
With regard to the display curve defining the fibre size ofthe product material, reference is made to the example in fig.1. In this display curve it is assumed that the agglomerate/granulate has a maximum diameter of 4mm. The majority of the fibres have here been chosen with lengths of about 2mm with a dispersion according to the curve.
Fig.2 is intended to show a specimen 1 of a recyclable product material manufactured by the method according to the invention. Agglomerate/granulate have been combined as N volume elements lal, la2 ... with different preferred alignments of the fibres, which are included in the various volume elements. This consequently means, according to the invention, that for each such volume element the values of the modulus of elasticity (Eυ), the modulus in shear (G,j) and the Poisson's ratio (υ.j) will differ from the values of similar quantities for adjacent volume elements. This confers great internal couple stresses.
Claims (4)
1. Method for the manufacture of a recyclable product material, comprising at least one matrix material and at least one fibre material in order to achieve a predetermined strength within a predetermined strain rate interval in the product material, characterised in that in different volume elements ofthe product material the matrix and fibre materials are selected in such a way that the values of their moduli of elasticity (E(J), the moduli in shear (GtJ) and the Poisson's ratios (υυ) assume a discontinuous distribution and that a display curve defining a continuous distribution of fibre size of the product material exhibits symmetry.
2. Method according to claim 1, characterised in that through the choice of a fibre material or mixture of at least two fibre materials it is ensured that the display curve of the fibre material/the mixed fibre materials is approximately symmetrical about a predetermined mean value.
3. Method according to claim 1, characterised in that the form factor ofthe fibre material/the mixed fibre materials, that is the ratio of fibre length to fibre diameter, exhibits dispersion.
4. Method according to claim 3, characterised in that the respective form factors of the said fibre materials are such that the particle size ofthe contaminations is exceeded, that is to say that the fact that one or more of the matrix/fibre materials is contaminated does not have a detrimental effect on the strength of the product material.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9503190 | 1995-09-14 | ||
SE9503190A SE504882C2 (en) | 1995-09-14 | 1995-09-14 | Method of producing a recyclable product material |
PCT/SE1996/001124 WO1997010935A1 (en) | 1995-09-14 | 1996-09-10 | Method at the manufacturing of a recyclable product material |
Publications (2)
Publication Number | Publication Date |
---|---|
AU7003896A true AU7003896A (en) | 1997-04-09 |
AU700632B2 AU700632B2 (en) | 1999-01-07 |
Family
ID=20399487
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AU70038/96A Ceased AU700632B2 (en) | 1995-09-14 | 1996-09-10 | Method at the manufacturing of a recyclable product material |
Country Status (8)
Country | Link |
---|---|
EP (1) | EP0969954A2 (en) |
JP (1) | JP2000500167A (en) |
AU (1) | AU700632B2 (en) |
CA (1) | CA2231811A1 (en) |
NO (1) | NO981060D0 (en) |
PL (1) | PL325465A1 (en) |
SE (1) | SE504882C2 (en) |
WO (1) | WO1997010935A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11360130B2 (en) | 2019-06-20 | 2022-06-14 | Schneider Electric USA, Inc. | Distributed electrical energy meter |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IL105950A0 (en) * | 1992-06-09 | 1993-10-20 | Baker Richard D | Recycled fibre reinforced resin containing product and method and apparatus therefor |
DE4236446A1 (en) * | 1992-10-28 | 1994-05-05 | Herfeld Gmbh & Co Kg Dr | Process for the production of a recyclable agglomerate from plastic waste |
-
1995
- 1995-09-14 SE SE9503190A patent/SE504882C2/en not_active IP Right Cessation
-
1996
- 1996-09-10 JP JP51222297A patent/JP2000500167A/en active Pending
- 1996-09-10 AU AU70038/96A patent/AU700632B2/en not_active Ceased
- 1996-09-10 CA CA 2231811 patent/CA2231811A1/en not_active Abandoned
- 1996-09-10 EP EP19960931324 patent/EP0969954A2/en not_active Withdrawn
- 1996-09-10 WO PCT/SE1996/001124 patent/WO1997010935A1/en not_active Application Discontinuation
- 1996-09-10 PL PL32546596A patent/PL325465A1/en unknown
-
1998
- 1998-03-11 NO NO981060A patent/NO981060D0/en not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
CA2231811A1 (en) | 1997-03-27 |
NO981060L (en) | 1998-03-11 |
WO1997010935A1 (en) | 1997-03-27 |
AU700632B2 (en) | 1999-01-07 |
NO981060D0 (en) | 1998-03-11 |
JP2000500167A (en) | 2000-01-11 |
SE9503190L (en) | 1997-03-15 |
PL325465A1 (en) | 1998-07-20 |
SE9503190D0 (en) | 1995-09-14 |
SE504882C2 (en) | 1997-05-20 |
EP0969954A2 (en) | 2000-01-12 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
AU596122B2 (en) | Coated optical fiber | |
EP0190011B1 (en) | Glass fiber strand and method of manufacture thereof | |
US5464684A (en) | Hybrid yarn comprising a core of intermixed polyamide filaments and reinforcing rilaments wherein the core is wrapped by a polyamide fiber | |
CN101175627A (en) | Method of manufacturing composite optical body containing inorganic fibers | |
US4547421A (en) | Highly dispersed continuous glass fiber mats | |
EP0489243A1 (en) | Method for making ceramic matrix composites | |
EP0623434B1 (en) | See-through concrete form | |
EP0316922A2 (en) | Fiber-reinforced resin material and fiber-reinforced resin laminate using it as base material | |
WO2006090030A1 (en) | Corrosion-resistant fiberglass-reinforced plastic material | |
US20040177580A1 (en) | Reinforced foam articles | |
AU700632B2 (en) | Method at the manufacturing of a recyclable product material | |
US5716697A (en) | Glass fiber containing polymer sheet and process for preparing same | |
US20040177579A1 (en) | Reinforced foam articles | |
JPH0617363A (en) | Method for manufacturing molded item by compression-molding of textile material by simultaneous adhesion and its molded item | |
Monette et al. | The Young’s modulus of silica beads/epoxy composites: experiments and simulations | |
US20030215633A1 (en) | Fiber glass product incorporating string binders | |
Yang et al. | Study of the effect of regrinding on the cumulative damage to the mechanical properties of fiber‐reinforced nylon 66 | |
US4826549A (en) | Filamentary splicing | |
US3813269A (en) | Method of making fiber glass thermoplastic sheets | |
JPS60235850A (en) | Foamed molding of polyolefin resin and manufacture thereof | |
EP0950504B1 (en) | Thermoplastic resin-combined glass fiber base material, process for its production and its use | |
Rose et al. | Structure/property relationships in LCP/PEI blends revealed with a new selective etching process | |
KR19980703372A (en) | Single-step manufacturing method of solid surface material with foam on the back | |
KR101432008B1 (en) | Composition comprising at least two kinds of resin, glass fiber, LDPE and rubber-resin | |
Mogavero et al. | Permeability- A key to successful modeling of the RTM process |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
MK14 | Patent ceased section 143(a) (annual fees not paid) or expired |