GB2473426A - Waste plastics material for moulding building components - Google Patents

Waste plastics material for moulding building components Download PDF

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Publication number
GB2473426A
GB2473426A GB0915441A GB0915441A GB2473426A GB 2473426 A GB2473426 A GB 2473426A GB 0915441 A GB0915441 A GB 0915441A GB 0915441 A GB0915441 A GB 0915441A GB 2473426 A GB2473426 A GB 2473426A
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United Kingdom
Prior art keywords
members
foundation
waste plastics
mixture
male
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Withdrawn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
GB0915441A
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GB0915441D0 (en
Inventor
Michael John Smith
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Individual
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to GB0915441A priority Critical patent/GB2473426A/en
Publication of GB0915441D0 publication Critical patent/GB0915441D0/en
Publication of GB2473426A publication Critical patent/GB2473426A/en
Withdrawn legal-status Critical Current

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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
    • 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
    • B29B17/0042—Recovery of plastics or other constituents of waste material containing plastics by agglomeration or compacting for shaping parts, e.g. multilayered parts with at least one layer containing regenerated plastic
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/38—Connections for building structures in general
    • E04B1/61—Connections for building structures in general of slab-shaped building elements with each other
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
    • E04B2/02—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls built-up from layers of building elements
    • E04B2/04—Walls having neither cavities between, nor in, the solid elements
    • E04B2/06—Walls having neither cavities between, nor in, the solid elements using elements having specially-designed means for stabilising the position
    • E04B2/08—Walls having neither cavities between, nor in, the solid elements using elements having specially-designed means for stabilising the position by interlocking of projections or inserts with indentations, e.g. of tongues, grooves, dovetails
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/10—Building elements, e.g. bricks, blocks, tiles, panels, posts, beams
    • B29L2031/102—Bricks
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
    • E04B2/02—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls built-up from layers of building elements
    • E04B2002/0202—Details of connections
    • E04B2002/0204—Non-undercut connections, e.g. tongue and groove connections
    • E04B2002/0215—Non-undercut connections, e.g. tongue and groove connections with separate protrusions
    • E04B2002/0217—Non-undercut connections, e.g. tongue and groove connections with separate protrusions of prismatic shape
    • 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

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Road Paving Structures (AREA)
  • Polyurethanes Or Polyureas (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

Waste plastics objects are reduced to a maximum dimension of 100mm, preferably less than 10mm, and mixed with a complete polyurethane system or stepwise with components of the system, and moulded into building members. The polyurethane system may comprise polyether or polyester polyol, may comprise castor oil, and diphenylmethane or toluene diisocyanate. Preferably 1 part of the polyurethane system is mixed with 0.5 to 4 parts by weight of the waste plastics. Between 1 and 20% sand by weight may be added to the mixture, and may be sprinkled onto the surface of the mixture in the mould. The polyurethane system may comprise a catalyst and/or a foaming agent. The building member may be a foundation member of a foundation system 50. The foundation system may comprise first and second foundation members having a cuboid shaped base 52,64 with corresponding male and female protrusions 54,66 and recesses 58 which interlock in use. The protrusions and recesses may be cuboid in shape and may have sloping sides 60. The foundation members may have bolt holes (70,72, Figure 4) to aid lifting by crane and to allow members to be secured together. The first and second foundation members may define channels or conduits (74) to facilitate inclusion of service pipes and cables.

Description

A method of utilizing waste plastics to make moulded building materials etc. B ack ground The present invention concerns a new method of utilizing waste plastics material and use of such materials for the manufacture of building blocks, foundation members and other similar building materials.
Most developed national economies presently produce massive quantities of waste plastics material; often from the packaging of both foods and general consumer goods.
In some countries, the majority of such waste material is disposed of in land-fill sites.
However, suitable land-fill sites are becoming increasingly scarce, especially in industrialized countries. There is therefore a need to find other ways of disposing of or utilizing such waste.
Summary of Invention
An objective of the present invention is to provide a method of utilizing waste plastics in the manufacture of building materials and in particular building blocks, foundation members and the like. Another objective is to produce new building members especially suitable for use in laying foundations for roads, driveways, car parks etc. using an interlocking system of building members. Another aim of the invention is to provide improved strength foundation members; in particular members that are more flexible and so less likely to crack under load conditions.
In a first aspect the invention comprises a method of using waste plastics material to make building members where waste plastics objects are reduced to a maximum dimension of less than 100mm and then mixed with a either a complete liquid polyurethane system or stepwise with components of such a system and then transferred to a. mould shaped to provide said building member. Preferably, the waste plastics objects are reduced to a maximum dimension of less than 10mm. The liquid polyurethane system may be produced by mixing a polyol with a isocyanate. The polyol may be a polyether polyol or a polyester poiyoi. The isocyanate may be diphenylmethane diisocyanate or toluene disiocyanate.
In another aspect, the invention comprises a method of using waste plastics material to make building members comprising the following steps: (a) reduce size of waste plastics material to less than 100mm; (b) prepare 1 part by weight of liquid polyurethane system by mixing a liquid isocyanate with a liquid polyol or a blend of liquid polyols: (c) take I part by weight of the liquid polyurethane system prepared according to step (b) and add and mix with between 0.5 and 4 parts by weight of sized waste plastics prepared in step (a); and (d) transfer the mixture prepared by step (c) into a mould and leave to cure. The poiyol may be a polyether polyol or a polyester polyol. The isocyanate may be diphenylmethane diisocyanate or toluene disiocyanate.
Preferably, the mould is shaped to provide said building member. Preferably in step (a) the waste plastics material is reduced to a maximum dimension of 10mm.
The liquid polyurethane system preferably comprises a mixture of polyether or polyester polyols with diphenylmethane diisocyanate. The liquid polyurethane system may also comprise a mixture of polyether or polyester polyols with toluene diisocyanate. Castor oil is a suitable source of polyester polyol.
The liquid polyurethane system may also contain a catalyst and/or a foaming agent.
The foaming agent may comprise water. The use of a foaming agent results in relatively lightweight foundation members.
During step (c) sand may also added to the mixture such that the mixture contains between 1 and 20% sand by weight; and preferably between 2 and 8% by weight. The sand may also be added after the mixture has been transferred to a mould (step d); either soon after or after the mixture has partly cured. In the latter case any sand sprinkled on the surface will not sink. In this way sand may be deposited just on the surface of the mixture such that the final cured foundation member has a tougher surface. If sand is added almost immediately after transferring the mixture prepared by step (c) to the mould it will normally sink to the bottom of the mould. Addition of sand results in a stronger building member. Hence, it is particularly advantageous to add sand to building members that have male protrusions as this reduces the possibility of fracture of this part of the system in use (see below).
The waste plastics material will typically be contaminated with small amounts of glass, fiberglass, wood, metal (ferrous and none ferrous) and the like. This does not adversely affect the properties of the building members produced by the method of this invention. Where very large building members (see below) (for example: foundation blocks for roads may be 500mm deep) are being produced the maximum size of the plastics objects used in the method may be up to 100mm. Where building members are smaller (for example as used in domestic paving) the maximum dimension of the shredded plastic is preferably 5 to 20mm.
In another aspect the invention comprises a foundation building system comprising first and second foundation members; said first members having a cuboid shaped base with at least one male protrusions and; said second members having a cuboid shaped base with at least one corresponding female recess; such that in use the first members may be placed on top of a matrix of second members in a regular pattern and the first and second members may interlock by engagement of said male protrusion and female recess. Preferably, when the first and second members are so interlocked the longest sides when viewed from above are at right angles to each other.
In another aspect the invention comprises a foundation system comprising first and second paving members; said first members having a cuboid shaped base and two or more male protrusions and; said second members having a cuboid shaped base and two or more corresponding female recesses; such that in use the first members may be placed on top of a matrix of second members in a regular pattern and the first and second members may interlock by engagement of said male protrusions and female recesses. Preferably, when the first and second members are so interlocked the longest sides when viewed from above are at right angles to each other.
In both of the above foundation systems, the male protrusions may be cube or cuboid in shape. Preferably, the male protrusions and female recesses have sloping sides; this assists interlocking. Preferably, the male protrusion comprises a plurality of cubes or cuboids stacked one upon another upon the slab, each being smaller than the one below; in some cases forming a pyramid; the stack and the slab forming a unitary body. Alternatively, the protrusions may be of elliptical or polygon shaped cross section -in which case the female recesses will be appropriately shaped so as to provide the desired angular interlocking property. While the base of the foundation members is preferably cuboid shaped other configurations are possible; for example the base of the foundation may have be hexagonal or octagonal (plan view) in shape.
Large foundation members, suitable for making road foundations, will typically be 500-1000mm wide, 1000-2000mm long and 250-500mm deep although significantly smaller sized members would be used for domestic developments and driveways.
By selecting waste plastics of a particular colour or alternatively by adding a suitable dye attractive foundation members (slabs) can be produced that are particularly suitable for domestic and commercial ground paving applications. The use of interlocking male and female members results in a stronger foundation and also more readily allows portions to be subsequently removed. This is particularly valuable when the foundation members are used in commercial and domestic applications; especially when they provide surface paving. The system may also be used to provide a temporary foundation, so that following use the component members may be disconnected from one another and used elsewhere.
A method of the invention utilizises shredded waste plastics material in which the waste is fixed in slab form using a liquid polyurethane system; wherein the waste plastic and the liquid polyurethane system are mixed in a mould and allowed to cure.
The material so formed may be used to produce male and female foundation members that may be readily interlocked in a crosswise manner to form road and building foundations.
Brief Description of Drawings
The invention will now be described by reference to the following diagrammatic drawings in which: Figure 1 shows a plan view of two different foundation members used in the foundation system and a cross sectioned side view along the lines A-A' of the plan view; Figure 2 shows for another embodiment of the invention a plan view of two identical interlocked foundation members and a cross sectioned side view along the lines B-B' of the plan view; Figure 3 shows a cross sectioned view similar to that of Figures 1 and 2 where the protrusions and recesses have sloping sides; and Figure 4 shows a variant of the embodiment shown in Figure 1.
Detailed Description of the invention
Examples of the method (at a very small scale) are provided in Examples I and 2 below. Example 1 relates to the preparation of a standard material; while Example 2 relates to the preparation of a lightweight material.
Example 1
Samples of the standard material were produced conducting the following steps: 1. Retrieving mixed plastics, typically containing at least some contaminants was cut down to a 250mm2 approx face area to enable it to be inserted into the shredder; 2. The material from step I was transferred to a plastic waste into a grinder! shredder to reduce the size down to a maximum size of 10mm; 3. Following size reduction in Step 2, 12kg of the plastic was placed into a round mixing bucket and agitated, by motor driven mixing screw, and 3 kg of Part A of the standard polyurethane formulation (see below) was mixed with the same mixing screw once all plastic has been covered by Part A polyurethane; 4. 1kg of Part B of the standard polyurethane formulation (see below) was then added to the mixture prepared in Step 3 and was mixed with the same mixing screw to produce a 25% polyurethane to 75% plastic waste mix.
5. The mixture prepared by Step 4 was then poured into moulds that has been prepared with a release agent supplied by the same manufacturer; 6. The plastics material was then left to cure for 12-16 hours before being removed from the mould.
Alternatively, during step (3) above the mixing by use of the motor driven screw may start after some or all of the Part A of the standard polyurethane formulation has been added to the shredded plastic. Also, Part A and Part B of the standard polyurethane formulation may be mixed prior to addition to the -10mm plastics material. A small amount of kiln dried sand may also be added during Step 3 if an especially hard wearing surface is required. Thus, in another experiment 1kg of kiln dried sand was added during Step 3 (the mixing stage) described in Example 1.
Example 2
Steps 1 and 2 as Example 1; 3. Following size reduction the plastic 12kg were placed into a round mixing bucket and agitated, by motor driven mixing screw; and 2.4 kg of Part A of the polyurethane foam formulation (see below) was mixed with the same mixing screw once all plastic has been covered by Part A polyurethane; 4. 0.8 kg of Part B of the polyurethane foam formulation (see below) was then added to the mixture prepared in Step 3 and was mixed with the same mixing screw and then immediately transferred to a mould; 5. The mould was covered and allowed the mixture allowed to cure for 10 mm before removing from mould.
The standard polyurethane formulation used in the above examples (Part A and Part B) was Product A9493 or A9597 as supplied by Apollo Chemicals Limited, Sandy Way Amington Industrial Estate, Tamworth, Staffs, 877 4DS, UK. This is a polyurethane made by mixing Part A and Part B reactants; Part A may comprise castor oil (a polyester polyol); and Part B may comprise diphenylmethane diisocyanate (isomers and homologues).
The material produced by the above method is preferably used to manufacture foundation members. The foundation members have a distinctive configuration which allows them to be interlocked during laying of the foundation members. This not only produces a firmer foundation but also greatly assists part temporary removal in order to allow underground access that may be required during repair works etc. Commercially, the foundation members could be manufactured using a production line system where moulds passing along a conveyance system are filled with plastic waste and then a liquid polyurethane mixture (as they pass dispensing component feed stations). Thus, the waste plastic can be fed to the passing moulds using a conveyor belt or the like and then liquid polyurethane mixture or the component reactants added to the mould using nozzles. In such a system a catalyst can also be added to accelerate the formation of solid polyurethane.
Figure 1 shows the preferred configuration for the foundation members. The foundation system (10) comprises a plurality of female slabs (12) and a plurality of male slabs (14). The male slab (14) has a cuboid shaped base (16) each with a pair of male protrusions (18) also cuboid in shape. Preferably the cuboid-shaped protrusions (18) have are square when viewed from above (plan view) and optionally there may be a second smaller cuboid protrusion (20), again preferably square in plan view, and preferably arranged (from plan view) at the centre of the first protrusion (16). The protrusion or protrusions (18, 20) and the base (16) form a unitary member. This unitary member is preferably cast from materials produced by the method of the present invention. The female slab (12) comprises a pair of recesses (22), preferably cuboid in shape sized and positioned such that the male protrusions of the male slab (14) fit snugly within the female recesses of the female slab (12). Thus, the female recesses may also have the shape of two cuboids a larger above (22) and a smaller (24) beneath. This unitary member is preferably cast from the plastics material of the present invention. In use the male and female foundation members are not laid one directly beneath another; rather they are arranged at right angles to each other (see Figure 1 -plan view). By laying many foundation members in this way a strong two layer structure may readily be obtained.
Figure 2 shows a foundation system (30) that uses identical foundation members (32) rather than the above described male and female foundation members. The foundation member again has a cuboid-shaped base (34) with a cuboid shaped protrusion (36) and a cuboid-shaped recess (38). This unitary member is preferably cast from the plastics material made by the method of the present invention. Again, in use the foundation members are arranged at right angles (see Figure 2 -plan view).
Figure 3 shows another embodiment of a foundation system (50) according to the present invention. It differs from the embodiment shown in Figure 2 in that the cuboid-shaped base (52) has a protrusion (54) with sloping sides (56). The base (52) also has a recess (58) with sloping sides (60) that are configured to snugly accommodate such protrusions. A second member (62) may comprise a cuboid-shaped base (64) with either two protrusions (66) or such a base with one protrusion and one recess; thus resembling the members shown in Figure 1; except that the sides of the protrusions and base are sloped.
Figure 4 shows a variant of the embodiment of Figure 1 and has corresponding label numbers apart from lifting and bolting holes (70, 72) a services channel (74). Bolt holes (70) may be advantageously located in the upper face of a female slab (12) or of a male slab (not shown). These holes can be used to insert temporary bolts or the like that may be inserted to assist attachment of the slabs to a crane or the like to allow temporary lifting of larger slabs during installation on site. Optionally, holes 70 may extend downwardly into the upper face of the male slab (14); this allows fixing bolts (not shown) to be inserted in holes 70 and 72 to secure the female slab (12) to the male slab (14). The male and female slabs may also have channels/conduits (voids) formed lengthways or sideways to facilitate the iflclusion of service pipes and cables within the foundation. In the present example the conduits (74) have a rectangular shaped cross section.

Claims (16)

  1. CLAIMS1. A method of using waste plastics material to make building members where waste plastics objects are reduced to a maximum dimension of less than 100mm and then mixed with a either a complete liquid polyurethane system or stepwise with components of such a system and then transferred to a mould shaped to provide said building member.
  2. 2. A method dependant or independent of Claim 1 of using waste plastics material to make foundation members comprising the following steps: (a) reduce size of waste plastics material to lessthan 100mm; (b) prepare 1 part by weight of liquid polyurethane system by mixing a liquid isocyanate with a liquid polyol or a liquid blend of polyols.(c) take 1 part by weight of the liquid polyurethane system prepared according to step (b) and add and mix at the same time or thereafter between 0.5 and 4 parts by weight of sized waste plastics prepared in step (a); (d) transfer the mixture prepared by step (c) into a mould shaped to provide said building member and leave to cure.
  3. 3. A method according to Claim 2 where the polyol comprises a polyether polyol or a polyester poiyol.
  4. 4. A method according to Claim 2 or 3 where the isocyanate comprises diphenylmethane diisocyanate or toluene diisocyanate.
  5. 5. A method according to any preceding claim where waste plastics objects are reduced to a maximum dimension of less than 10mm.
  6. 6. A method according to any of Claim 2 to 5 in which during step (c) sand is also added to the mixture such that the mixture contains between 1 and 20% sand by weight.
  7. 7. A method according to Claim 6 in which the mixture contains between 2 and 8% sand by weight.
  8. 8. A method according to any of Claims 2 to 5 where during step (d) sand is sprinkled on the upper surface of the mixture in the mould.
  9. 9. A method according to any preceding claim where the liquid polyurethane system of also contains a catalyst to accelerate the curing step.
  10. 10. A method according to any preceding claim where the liquid polyurethane system also contains a foaming agent.
  11. 11. A foundation system comprising first and second foundation members of material made according to Claim 1 to 10; said first members having a cuboid shaped base with at least one male protrusions and; said second members having a cuboid shaped base with at least one corresponding female recess; such that in use the first members may be placed on top of a matrix of second members in a regular pattern and the first and second members may interlock by engagement of said male protrusion and female recess.
  12. 12. A foundation system comprising first and second foundation members of material made according to Claim 1 to 10; said first members having a cuboid shaped base and two male protrusions and; said second members having a cuboid shaped base and two corresponding female recesses; such that in use the first members may be placed on top of a matrix of second members in a regular pattern and the first and second members may interlock by engagement of said male protrusions and female recesses.
  13. 13. A foundation system according to Claim 11 or 12 where said protrusions and recesses are configured such that when the first and second members are interlocked their longest sides, when viewed from above, are at right angles to each other.
  14. 14. A foundation system according to any of Claims 11 to 13 where the male protrusion is a cube or'cuboid.
  15. 15. A foundation system according to Claim 14 where the male protrusion comprises a plurality of cubes or cuboids stacked one upon another, each being smaller than the one below; the stack being of unitary body.
  16. 16. A foundation system according to any of Claims 11 to 15 where the male protrusions have sloping sides and the female recesses have corresponding sloping sides in order to facilitate interlocking
GB0915441A 2009-09-04 2009-09-04 Waste plastics material for moulding building components Withdrawn GB2473426A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0915441A GB2473426A (en) 2009-09-04 2009-09-04 Waste plastics material for moulding building components

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0915441A GB2473426A (en) 2009-09-04 2009-09-04 Waste plastics material for moulding building components

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GB0915441D0 GB0915441D0 (en) 2009-10-07
GB2473426A true GB2473426A (en) 2011-03-16

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020222221A1 (en) 2019-04-29 2020-11-05 Vielfreund Sissel Alexander Symon Composite board from plastic waste
US11970586B1 (en) 2022-06-08 2024-04-30 Florida League Of Cities, Incorporated Composite materials and method of making composite materials

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1484740A (en) * 1974-10-05 1977-09-01 Bayer Ag Process for the production of composites
JPS5723638A (en) * 1980-06-26 1982-02-06 Inoue Mtp Co Ltd Preparation of heat insulating material with waste material of rigid polyurethane foam
DE4317330A1 (en) * 1992-06-05 1993-12-09 Klaus Ulrich Philipp Vibration-damping moulded parts for buildings for sound and moisture insulation - comprise cured, moulded mixts. of crushed, elastic, recycled rubber and elastic, plastic binder esp. low viscosity polyurethane resin
JPH06182779A (en) * 1992-12-17 1994-07-05 Inoac Corp Method for molding elastic block
DE4412959A1 (en) * 1994-04-13 1995-10-19 Andreas Ries Recycling aluminium@-PVC and other coated film prods.
DE19835728A1 (en) * 1998-08-07 2000-02-10 Basf Ag Production of molded articles from comminuted plastic waste comprises coating a portion of the waste with a polyol component and a portion with an isocyanate component prior to mixing and pressing
KR20020072768A (en) * 2001-09-19 2002-09-18 김인중 Method for preparing block using chip of waste tire
US20060272262A1 (en) * 2003-03-07 2006-12-07 Peter Pomberger Covering panel
DE102006033818A1 (en) * 2006-07-19 2008-01-24 R & T Pur-Verbundsysteme Ohg Producing building panels using recycled polyester and polyurethane plastic composites from construction- or automobile waste, shreds, screens, adds binder and water then compresses in mold
CN101204839A (en) * 2006-12-22 2008-06-25 厉留柱 Discarded high foaming plastics regeneration pelleting process

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1484740A (en) * 1974-10-05 1977-09-01 Bayer Ag Process for the production of composites
JPS5723638A (en) * 1980-06-26 1982-02-06 Inoue Mtp Co Ltd Preparation of heat insulating material with waste material of rigid polyurethane foam
DE4317330A1 (en) * 1992-06-05 1993-12-09 Klaus Ulrich Philipp Vibration-damping moulded parts for buildings for sound and moisture insulation - comprise cured, moulded mixts. of crushed, elastic, recycled rubber and elastic, plastic binder esp. low viscosity polyurethane resin
JPH06182779A (en) * 1992-12-17 1994-07-05 Inoac Corp Method for molding elastic block
DE4412959A1 (en) * 1994-04-13 1995-10-19 Andreas Ries Recycling aluminium@-PVC and other coated film prods.
DE19835728A1 (en) * 1998-08-07 2000-02-10 Basf Ag Production of molded articles from comminuted plastic waste comprises coating a portion of the waste with a polyol component and a portion with an isocyanate component prior to mixing and pressing
KR20020072768A (en) * 2001-09-19 2002-09-18 김인중 Method for preparing block using chip of waste tire
US20060272262A1 (en) * 2003-03-07 2006-12-07 Peter Pomberger Covering panel
DE102006033818A1 (en) * 2006-07-19 2008-01-24 R & T Pur-Verbundsysteme Ohg Producing building panels using recycled polyester and polyurethane plastic composites from construction- or automobile waste, shreds, screens, adds binder and water then compresses in mold
CN101204839A (en) * 2006-12-22 2008-06-25 厉留柱 Discarded high foaming plastics regeneration pelleting process

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020222221A1 (en) 2019-04-29 2020-11-05 Vielfreund Sissel Alexander Symon Composite board from plastic waste
EP3962706A4 (en) * 2019-04-29 2023-01-04 Vielfreund, Sissel Alexander Symon Composite board from plastic waste
US11970586B1 (en) 2022-06-08 2024-04-30 Florida League Of Cities, Incorporated Composite materials and method of making composite materials

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Publication number Publication date
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