GB2334914A - Securing materials together - Google Patents

Securing materials together Download PDF

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Publication number
GB2334914A
GB2334914A GB9804620A GB9804620A GB2334914A GB 2334914 A GB2334914 A GB 2334914A GB 9804620 A GB9804620 A GB 9804620A GB 9804620 A GB9804620 A GB 9804620A GB 2334914 A GB2334914 A GB 2334914A
Authority
GB
United Kingdom
Prior art keywords
formations
parts
product according
block
securing
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Withdrawn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
GB9804620A
Other versions
GB9804620D0 (en
Inventor
Agnes Lucienne Cour
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.)
Laird Holdings Ltd
Original Assignee
Draftex Industries 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 Draftex Industries Ltd filed Critical Draftex Industries Ltd
Priority to GB9804620A priority Critical patent/GB2334914A/en
Publication of GB9804620D0 publication Critical patent/GB9804620D0/en
Publication of GB2334914A publication Critical patent/GB2334914A/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Withdrawn legal-status Critical Current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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
    • B29C66/727—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being porous, e.g. foam
    • 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/302—Particular design of joint configurations the area to be joined comprising melt initiators
    • B29C66/3022—Particular design of joint configurations the area to be joined comprising melt initiators said melt initiators being integral with at least one of the parts to be joined
    • B29C66/30221—Particular design of joint configurations the area to be joined comprising melt initiators said melt initiators being integral with at least one of the parts to be joined said melt initiators being point-like
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/303—Particular design of joint configurations the joint involving an anchoring effect
    • B29C66/3032—Particular design of joint configurations the joint involving an anchoring effect making use of protusions or cavities belonging to at least one of the parts to be joined
    • B29C66/30325—Particular design of joint configurations the joint involving an anchoring effect making use of protusions or cavities belonging to at least one of the parts to be joined making use of cavities belonging to at least one of the parts to be joined
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/303—Particular design of joint configurations the joint involving an anchoring effect
    • B29C66/3032—Particular design of joint configurations the joint involving an anchoring effect making use of protusions or cavities belonging to at least one of the parts to be joined
    • B29C66/30325—Particular design of joint configurations the joint involving an anchoring effect making use of protusions or cavities belonging to at least one of the parts to be joined making use of cavities belonging to at least one of the parts to be joined
    • B29C66/30326—Particular design of joint configurations the joint involving an anchoring effect making use of protusions or cavities belonging to at least one of the parts to be joined making use of cavities belonging to at least one of the parts to be joined in the form of porosity
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/47—Joining single elements to sheets, plates or other substantially flat surfaces
    • B29C66/472—Joining single elements to sheets, plates or other substantially flat surfaces said single elements being substantially flat
    • 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/1403—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation characterised by the type of electromagnetic or particle radiation
    • B29C65/1412—Infrared [IR] radiation
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/302—Particular design of joint configurations the area to be joined comprising melt initiators
    • B29C66/3022—Particular design of joint configurations the area to be joined comprising melt initiators said melt initiators being integral with at least one of the parts to be joined
    • B29C66/30223—Particular design of joint configurations the area to be joined comprising melt initiators said melt initiators being integral with at least one of the parts to be joined said melt initiators being rib-like
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

A method of joining first (5) and second (8) parts together, the second part carrying at least one projection (10) for penetration of the first part. The method is preferably used for securing a block (5) made of cellular or fibrous material such as polyurethane to a base plate (8) made of a suitable thermoplastic material. The base plate (8) carries one or more projecting formations (10), shown as individual pointed formations. The two parts (5,8) are secured together by bringing them into contact so that the formations (10) pierce the block (5) and become at least partially positioned between adjacent fibres (6). Heat may be applied so as partially to soften the formations (10) prior to bringing the block (5) and the base (8) together.

Description

SECURING MATERIALS TOGETHER The invention relates to the securing of materials together.
Methods according to the invention, to be described below by way of example only, relate to methods of attaching two different parts together in a simple and effective manner. Products embodying the invention, and made by such methods, will also be described, again by way of example only.
By way of example only, one of the materials may be thermoplastics material and the other may be a thermoplastics material or other cellular or fibrous material.
According to the invention, there is provided a method of securing first and second parts together, in which the second part carries at least one projecting formation which at least partially enters the material of the first part when the two parts are pressed relatively together, whereby to secure the two parts together.
According to the invention, there is further provided a product, comprising first and second parts joined together, in which the second part carries at least one projecting formation which has at least partially enters the material of the first part, whereby to secure the two parts together.
Methods according to the invention of securing materials together, and products embodying the invention and incorporating such materials secured together, will now be described, by way of example only, with reference to the accompanying diagrammatic drawings in which: Figure 1 is a cross-section through two different materials showing a stage in one of the methods; and Figure 2 corresponds to Figure 1 but shows a later stage in the method.
Figure 1 shows a block or layer 5 of a first material which, in this example, is foamed or cellular material such as polyurethane, some of the cells being shown diagrammatically at 6. The block 5 is to be attached to a base 8 which, in this example, is moulded from a thermoplastics material.
The base 8 carries formations 10 in the form of individual pointed protuberances of any suitable shape. Instead, they may be in the form of longitudinally and parallely extending triangular cross-section ribs. Other differently shaped formations may be used instead. The formations 10 are advantageously produced integrally on the base 8 by the moulding process.
In order to secure the block 5 to the base 8, the formations 10 are heated, such as by infra-red heating or a similar method so as to soften them. The shape of the formations 10 is such that they concentrate the applied heat. The block 5 is then pressed into contact with the base 5 so that the formations 10 become forced into the cellular material of the block 5 and, in particular, become forced between and into the cells 6. A mechanical attachment is thereby produced which does not require chemical compatability between the two materials.
Various modifications may be made. For example, other thermoplastic materials may be joined using the methods described. In particular, the material of the block 5 may be fibrous or incorporate embedded fibres. The formations 10 become forced between the fibres to provide the required mechanical attachment.
The method described is advantageous because no preparation of the contacting surfaces is necessary (which is required if the two materials are to be attached by adhesive, or hot-melting).
The method can be entirely automated.
CLAIMS 1. A method of securing first and second parts together, in which the second part carries at least one projecting formation which at least partially enters the material of the first part when the two parts are pressed relatively together, whereby to secure the two parts together.
2. A method according to claim 1, including the step of applying heat to the formation before it at least partially enters the material of the second part.
3. A method according to claim 1 or 2, in which the material of the first part is cellular material, and in which the formation becomes positioned between and in the cells.
4. A method according to any preceding claim, in which the material of the first part comprises polyurethane material.
5. A method according to any preceding claim, in which the material of the first part is fibrous or includes fibres.
6. A method according to my preceding claim, in which the first part is made of material which is softer than the material of the second part.

Claims (1)

  1. 7. A method according to any preceding claim, in which there are a plurality of the formations.
    8. A method according to claim 7, in which the formations are individual pointed formations on a surface of the second part.
    9. A product, comprising first and second parts joined together, in which the second part carries at least one projecting formation which has at least partially enters the material of the first part, whereby to secure the two parts together.
    10. A product according to claim 7, in which the material of the first part adheres to the formation.
    11. A product according to claim 9 or 10, in which the material of the first part is cellular material, and in which the formation is positioned between and in the cells.
    12. A product according to claim 9 or 10, in which the material of the first part is fibrous or includes fibres.
    13. A product according to claim 9 or 10, in which the first part is made of material which is softer than the second part.
    14. A product according to any one of claims 9 to 13, in which the material of the first part comprises polyurethane material.
    15. A product according to any one of claims 9 to 14, in which there are a plurality of the formations.
    16. A product according to claim 15, in which the formations individual pointed formations on a surface of the second part.
    17. A method of securing together two parts made of thermoplastics material, substantially as described with reference to the accompanying drawing.
    18. A product, comprising two parts of thermoplastic material secured together, substantially as described with reference to the accompanying drawing.
GB9804620A 1998-03-06 1998-03-06 Securing materials together Withdrawn GB2334914A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9804620A GB2334914A (en) 1998-03-06 1998-03-06 Securing materials together

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9804620A GB2334914A (en) 1998-03-06 1998-03-06 Securing materials together

Publications (2)

Publication Number Publication Date
GB9804620D0 GB9804620D0 (en) 1998-04-29
GB2334914A true GB2334914A (en) 1999-09-08

Family

ID=10827985

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9804620A Withdrawn GB2334914A (en) 1998-03-06 1998-03-06 Securing materials together

Country Status (1)

Country Link
GB (1) GB2334914A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8506746B2 (en) 2010-03-30 2013-08-13 Airbus Operations Limited Method of forming a joint

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB371918A (en) * 1931-01-22 1932-04-22 Walter Allin Blackmore Improved means for joining together fabrics and other materials
JPH01146725A (en) * 1987-12-02 1989-06-08 Kobayashi Kogyosho:Kk Bonding method for thermoplastic and thermosetting foamed material
EP0510803A2 (en) * 1991-04-24 1992-10-28 British Gas plc Polyolefin coupler for joining polyolefin pipes

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB371918A (en) * 1931-01-22 1932-04-22 Walter Allin Blackmore Improved means for joining together fabrics and other materials
JPH01146725A (en) * 1987-12-02 1989-06-08 Kobayashi Kogyosho:Kk Bonding method for thermoplastic and thermosetting foamed material
EP0510803A2 (en) * 1991-04-24 1992-10-28 British Gas plc Polyolefin coupler for joining polyolefin pipes

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8506746B2 (en) 2010-03-30 2013-08-13 Airbus Operations Limited Method of forming a joint

Also Published As

Publication number Publication date
GB9804620D0 (en) 1998-04-29

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Legal Events

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