DE2952172C2 - Pad - Google Patents

Pad

Info

Publication number
DE2952172C2
DE2952172C2 DE2952172A DE2952172A DE2952172C2 DE 2952172 C2 DE2952172 C2 DE 2952172C2 DE 2952172 A DE2952172 A DE 2952172A DE 2952172 A DE2952172 A DE 2952172A DE 2952172 C2 DE2952172 C2 DE 2952172C2
Authority
DE
Germany
Prior art keywords
foam core
pad
edges
pores
closed
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.)
Expired
Application number
DE2952172A
Other languages
German (de)
Other versions
DE2952172B1 (en
Inventor
Heinz 6940 Weinheim Bender
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.)
SEKISUI (EUROPE) AG ZUG CH
Original Assignee
Carl Freudenberg KG
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 Carl Freudenberg KG filed Critical Carl Freudenberg KG
Priority to DE2952172A priority Critical patent/DE2952172C2/en
Priority to CH692180A priority patent/CH645266A5/en
Priority to IT50036/80A priority patent/IT1127906B/en
Priority to GB8040294A priority patent/GB2067199B/en
Priority to AT0625080A priority patent/AT371994B/en
Priority to FR8027234A priority patent/FR2472930A1/en
Publication of DE2952172B1 publication Critical patent/DE2952172B1/en
Application granted granted Critical
Publication of DE2952172C2 publication Critical patent/DE2952172C2/en
Expired legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B7/00—Footwear with health or hygienic arrangements
    • A43B7/14—Footwear with health or hygienic arrangements with foot-supporting parts
    • A43B7/1405—Footwear with health or hygienic arrangements with foot-supporting parts with pads or holes on one or more locations, or having an anatomical or curved form
    • A43B7/1415—Footwear with health or hygienic arrangements with foot-supporting parts with pads or holes on one or more locations, or having an anatomical or curved form characterised by the location under the foot
    • 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
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/18—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer of foamed material
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B7/00—Footwear with health or hygienic arrangements
    • A43B7/14—Footwear with health or hygienic arrangements with foot-supporting parts
    • A43B7/22—Footwear with health or hygienic arrangements with foot-supporting parts with fixed flat-foot insertions, metatarsal supports, ankle flaps or the like
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B7/00—Footwear with health or hygienic arrangements
    • A43B7/14—Footwear with health or hygienic arrangements with foot-supporting parts
    • A43B7/22—Footwear with health or hygienic arrangements with foot-supporting parts with fixed flat-foot insertions, metatarsal supports, ankle flaps or the like
    • A43B7/226—Footwear with health or hygienic arrangements with foot-supporting parts with fixed flat-foot insertions, metatarsal supports, ankle flaps or the like characterised by the material
    • 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
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/245—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it being a foam layer
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • 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
    • B32B2266/00—Composition of foam
    • B32B2266/02—Organic
    • B32B2266/0214—Materials belonging to B32B27/00
    • B32B2266/025—Polyolefin
    • 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
    • B32B2266/00—Composition of foam
    • B32B2266/08—Closed cell foam
    • 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
    • B32B2437/00—Clothing
    • B32B2437/02—Gloves, shoes

Description

Die Erfindung betrifft eine Pelotie für die orthopädische Anpassung von Schuhen, bestehend aus einem Schaumstoffkern mit weichelastischen Eigenschaften und mit zu den Rändern hin gleichmäßig abnehmender «> Dicke, dessen Oberseite mit einem flexiblen Flächengebilde und dessen Unterseite gegebenenfalls mit einem Klebstolf beschichtet istThe invention relates to an orthopedic pad Adaptation of shoes, consisting of a foam core with soft elastic properties and with a uniformly decreasing thickness towards the edges, the upper side of which is covered with a flexible flat structure and the underside of which is optionally coated with an adhesive stick

Die vorstehend angesprochene Pelotte ist im orthopädischen Fachhandel erhältü-h. Sie dient dazu, ->i Druckstellen in Schuhen weichelastisch auszupolstern bzw. durch entsprechende Ausbildung und Anbringung eine gezielte und zusätzliche Unterstützung des Fußes zu erhalten im Sinne einer ärztlichen Behandlung.The pad mentioned above is available from specialist orthopedic retailers. It serves to -> i Softly cushion pressure points in shoes or through appropriate training and attachment to receive targeted and additional support for the foot in the sense of medical treatment.

Entsprechend diesen verschiedenen Zwecken haben die angebotenen Pelotten eine unterschiedliche Form und Größe. Soweit sie einen Schaumstoffkern enthalten, hat dieser in allen Teilbereichen eine gleichartige Zellstruktur und dementsprechend ausgeglichen elastische Eigenschaften. In bezug auf eine Behandlung des 4' menschlichen Fußes mit seinen zumeist abgerundeten Oberflächenbereichen ergibt sich daraus aber in vielen Fällen ein indifferenter Abstützungseffekt, der als unangenehm empfunden werden kann. Außerdem müssen die Schaumstoffkerne in Einzelfertigung er- ä0 zeugt werden, was die Herstellung in unerwünschtem Maße verteuert.According to these different purposes, the pads offered have different shapes and sizes. If they contain a foam core, this has a similar cell structure in all sub-areas and accordingly balanced elastic properties. With regard to a treatment of the 4 'human foot with its mostly rounded surface areas, this results in many cases in an indifferent support effect which can be perceived as unpleasant. In addition, the foam cores have to be produced individually, which makes production more expensive to an undesirable extent.

Der Erfindung liegt die Aufgabe zugrunde, eine Pelotte der vorstehend angegebenen Art weiter zu entwickeln mit dem Ziel einer einfacheren Herstellbarkeit und eines verbesserten Tragkomforts.The invention is based on the object of providing a pad of the type specified above develop with the aim of easier manufacturability and improved wearing comfort.

Zur Lösung dieser Aufgabe wird gemäß der vorliegenden Erfindung eine Pelotte vorgeschlagen, deren Schaumstoffkern in sich selbst abgeschlossene, im wesentlichen kugelig ausgebildete Poren enthält, die mit einem Gas gefüllt sind, und deren Durchmesser in Richtung der Ränder stetig abnimmt.To solve this problem, a pad is proposed according to the present invention, whose foam core contains self-contained, essentially spherical pores, which with are filled with a gas, and their diameter steadily decreases in the direction of the edges.

Umgekehrt läßt sich sagen, daß der Durchmesser der kugelig ausgebildeten Poren oder Zellen in dem Bereich, in dem der Schaumstoffkern die größte Dicke hat, seine *" größten Werte erreicht. Die Elastizität und insbesondere die elastische Deformierbarkeit ist dementsprechend in diesem Bereich am größten, und sie nimmt vollkommen gleichmäßig ab in Richtung auf die außerhalb von der Pelotte liegenden Bereiche des Schuhes. Ein besonders gleichmäßiger Übergang läßt sich dabei erreichen, wenn die äußersten Randzonen des Schaumstoffkernes völlig frei von Poren sind, und wenn sie dementsprechend eine mechanische Widerstandsfähigkeit haben, wie sie von Leder oder ähnlichen Schuhwerkstoffen her bekannt istConversely, it can be said that the diameter of the spherical pores or cells in the area in which the foam core has the greatest thickness, its * " highest values achieved. The elasticity and in particular the elastic deformability is accordingly largest in this area, and it decreases completely evenly in the direction of the Areas of the shoe lying outside of the pad. A particularly smooth transition lets reach each other when the outermost edge zones of the foam core are completely free of pores, and when accordingly, they have a mechanical resistance similar to that of leather or the like Footwear materials is known

Als Werkstoffe für die Herstellung des erfind ;ngsgemäß verwendeten Schaumstoffkernes kommen unterschiedliche polymere Substanzen in Frage. Als besonders vorteilhaft hat sich jedoch die Verwendung eines geschlossenzellig geschäumten, vernetzten Polyäthylens erwiesen mit einem Rauingewicht von 70 bis 90 kg/m3. Ein solcher Schaumstoff hat einen größten Zellendurchmesser von ca. 0,8 mm. Er läßt sich als Bahnenware herstellen, in einem Endlosverfahren durch Flammkaschierung auf der Oberseite mit der gewünschten Abdeckschicht versehen und anschließend in die gewünschte Gestaltung umformen.Various polymeric substances can be used as materials for the production of the foam core used according to the invention. However, the use of a closed-cell foamed, crosslinked polyethylene with a gross weight of 70 to 90 kg / m 3 has proven to be particularly advantageous. Such a foam has a largest cell diameter of approx. 0.8 mm. It can be produced as a web product, provided with the desired covering layer on the upper side by flame lamination in an endless process and then reshaped into the desired design.

Vor allem kontinuierliche Prägeverfahren nach einer vorausgegangenen Erwärmung kommen hierfür in Frage, und die Umformung des Ausgangsmaterials bezieht sich auf alle Einzelbereiche der Pelotte. Hierdurch wird in den Poren eine Erhöhung des Gasdruckes bewirkt der mit abnehmender Porengröße des fertigen Werkstückes zunimmt. Die Festigkeit der Pelotte nimmt dadurch in Richtung der Randzonen zu, was besonders erwünscht ist.Above all, continuous embossing processes after previous heating are used for this Question, and the reshaping of the starting material relates to all individual areas of the pad. This causes an increase in the gas pressure in the pores as the pore size decreases of the finished workpiece increases. The firmness of the pad increases in the direction of the edge zones, which is particularly desirable.

Die Polyäthylenschäume sollten möglichst einen chemischen Vernttzungsgrad zwischen 30 und 60% haben. Liegt der Vernetzungsgrad niedriger, dann ist die Dimensionsstabilität in bezug auf Dauerbelastungen zu niedrig. Liegt der Vernetzungsgrad höher, dann paßt sich die Pelotte nicht mehr in dem erwünschten Maße durch eine plastische Deformation an Unregelmäßigkeiten des Fußes an. In jeder Hinsicht optimale Eigenschaften werden bevorzugt in dem genannten Bereich erhalten.The polyethylene foams should preferably have a degree of chemical crosslinking between 30 and 60% to have. If the degree of crosslinking is lower, then the dimensional stability with regard to permanent loads is increased low. If the degree of crosslinking is higher, the pad no longer fits to the desired extent through a plastic deformation to irregularities of the foot. Optimal in every way Properties are preferably obtained in the range mentioned.

Zur Anwendung kommen als Abdeckschichten neben Kunstledern vorzugsweise Vliesstoffe, die auf der Außenseite abgeschliffen sind. Durch dieses Abschleifen werden Faserenden aus der Vliesstoffschicht herausgelöst und sie stehen dann senkrecht aus dessen Oberfläche heraus. Sie verhindern in ihrer Gesamtheit das Auftreten von Hautreizungen durch Scheuerwirkungen, und geben gleichzeitig dem Fuß einen relativsicheren Halt gegen seitliches Abgleiten.In addition to synthetic leather, nonwovens are preferably used as cover layers, which are on the Outside are sanded. As a result of this grinding, the fiber ends are loosened from the nonwoven layer and they then protrude vertically from its surface. They prevent in their entirety the occurrence of skin irritation due to abrasive effects, and at the same time give the foot a relatively safe Hold against sliding sideways.

Eine beispielhafte Ausführung der erfindungsgemäßen Pelotte ist in der Zeichnung dargestellt. F i g. I zeigt die Pelotte in längsgeschnittener Darstellung. Darin ist mit 1 der Schaumstoffkern bezeichnet, dessen kugelige Poren einen Durchmesser haben, der zu den Randzonen hin gleichmäßig abnimmt. Der Schaumstoffkern ist auf der Oberseite mit einer flexiblen Abdeckschicht 2 versehen, beispielsweise aus einem natürlichen oder einem künstlichen Leder oder einem abgeschliffenen Vliesstoff. Auf die Unterseite 3 ist eine Schicht aus einem Reaktivkleber aufgebracht, die durch eine Abdeckfolie 4 aus PVC gegen Eintrocknung geschützt ist.An exemplary embodiment of the pad according to the invention is shown in the drawing. F i g. I shows the pad in a lengthwise cut representation. Therein, 1 denotes the foam core, its spherical Pores have a diameter that decreases evenly towards the edge zones. The foam core is on the top is provided with a flexible cover layer 2, for example made of a natural or an artificial leather or a sanded nonwoven fabric. A layer is made on the underside 3 a reactive adhesive applied, which is protected against drying out by a cover sheet 4 made of PVC is.

F i g. 2 gibt die Pelotte gemäß F i g. 1 in der Draufsicht wieder. Es soll mit dieser Darstellung insbesondere zum Ausdruck gebracht werden, daß die auf die Oberseile aufkaschierte Abdeckschicht 2 die Ränder des Schaumstoffkernes 1 um ein größeres Maß überdeckt um dadurch einen besonders gleichmäßigen Übergang zwischen den ungepolsterten Bereichen eines SchuhesF i g. 2 gives the pad according to FIG. 1 again in plan view. It is intended with this representation in particular for Be expressed that the cover layer 2 laminated onto the upper ropes, the edges of the foam core 1 is covered by a larger amount, thereby creating a particularly smooth transition between the unpadded areas of a shoe

dem weichelastischen Zentrum des Schaumstoffneszu erhalten.the flexible center of the foam obtain.

)er grundsätzliche Aufbau der erfindungsgemäßen 3tte läßt sich vorteilhaft auch in bezug auf die •stellung von Fersen- oder Zungenpolstern in uhen verwenden.) he basic structure of the invention 3tte can also be used advantageously with regard to the • position of heel or tongue pads in uhen use.

Hierzu 1 Blat: ZeichnungenFor this 1 sheet: drawings

Claims (3)

Patentansprüche:Patent claims: 1. Pelotte für die orthopädische Anpassung von Schuhen, bestehend aus einem Schaumstoffkern mit weichelastischen Eigenschaften mit zu den Rändern ■> hin gleichmäßig abnehmender Dicke, dessen Oberseite mit einem flexiblen Flächengebilde und dessen Unterseite gegebenenfalls mit einem Klebstoff beschichtet ist, dadurch gekennzeichnet, daß der Schaumstoffkern in sich selbst abgeschlosse- ι» ne, im wesentlichen kugelig ausgebildete Poren enthält, die mit einem Gas gefüllt sind, und deren Durchmesser in Richtung und Form auf die Ränder stetig abnimmt bzw. verändert1. Pad for the orthopedic adjustment of shoes, consisting of a foam core with soft elastic properties with thickness decreasing evenly towards the edges, its top side with a flexible sheet-like structure and its underside, optionally with an adhesive is coated, characterized in that the foam core is closed in itself ι » ne, essentially spherical pores which are filled with a gas, and their Diameter in direction and shape on the edges steadily decreases or changes 2. Pelotte nach Anspruch 1, dadurch gekennzeich- 1^ net, daß der Schaumstoffkern in den äußersten Randzonen völlig frei von Poren ist2. pad according to claim 1, characterized gekennzeich- 1 ^ net, that the foam core in the outermost edge zone is completely free of pores 3. Pelotte nach Anspruch 1 bis 2, dadurch gekennzeichnet, daß der Schaumstoffkern aus einem geschlossenzellig geschäumten, vernetzten Polyäthylen mit einem Raumgewicht von 70 bis 90 kg/m3 besteht.3. Pad according to claim 1 to 2, characterized in that the foam core consists of a closed-cell foamed, cross-linked polyethylene with a density of 70 to 90 kg / m 3 .
DE2952172A 1979-12-22 1979-12-22 Pad Expired DE2952172C2 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
DE2952172A DE2952172C2 (en) 1979-12-22 1979-12-22 Pad
CH692180A CH645266A5 (en) 1979-12-22 1980-09-16 CUSHION FOR THE ORTHOPAEDIC ADJUSTMENT OF SHOES.
IT50036/80A IT1127906B (en) 1979-12-22 1980-10-29 IMPROVEMENT IN ADAPTATION BEARINGS FOR ORTHOPEDIC SHOES
GB8040294A GB2067199B (en) 1979-12-22 1980-12-16 Foamed pads
AT0625080A AT371994B (en) 1979-12-22 1980-12-22 PELOTTE
FR8027234A FR2472930A1 (en) 1979-12-22 1980-12-22 PAD FOR ORTHOPEDIC SHOE ADAPTATION

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2952172A DE2952172C2 (en) 1979-12-22 1979-12-22 Pad

Publications (2)

Publication Number Publication Date
DE2952172B1 DE2952172B1 (en) 1981-06-11
DE2952172C2 true DE2952172C2 (en) 1982-03-11

Family

ID=6089548

Family Applications (1)

Application Number Title Priority Date Filing Date
DE2952172A Expired DE2952172C2 (en) 1979-12-22 1979-12-22 Pad

Country Status (6)

Country Link
AT (1) AT371994B (en)
CH (1) CH645266A5 (en)
DE (1) DE2952172C2 (en)
FR (1) FR2472930A1 (en)
GB (1) GB2067199B (en)
IT (1) IT1127906B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU651550B3 (en) * 1994-05-12 1994-07-21 Robert Charles Bio mechanical corrective devices

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL270783A (en) * 1960-10-28 1900-01-01
US3889032A (en) * 1972-05-10 1975-06-10 Lester Max Koelsch Foamed plastic sheet material and system for its manufacture

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
NICHTS ERMITTELT *

Also Published As

Publication number Publication date
AT371994B (en) 1983-08-25
GB2067199A (en) 1981-07-22
IT1127906B (en) 1986-05-28
IT8050036A0 (en) 1980-10-29
ATA625080A (en) 1983-01-15
FR2472930A1 (en) 1981-07-10
CH645266A5 (en) 1984-09-28
FR2472930B1 (en) 1985-02-15
GB2067199B (en) 1983-06-02
DE2952172B1 (en) 1981-06-11

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Legal Events

Date Code Title Description
8327 Change in the person/name/address of the patent owner

Owner name: SEKISUI (EUROPE) AG, ZUG, CH

8328 Change in the person/name/address of the agent

Free format text: STREHL, P., DIPL.-ING. DIPL.-WIRTSCH.-ING. SCHUEBEL-HOPF, U., DIPL.-CHEM. DR.RER.NAT. GROENING, H.,DIPL.-ING., PAT.-ANWAELTE SCHULZ, R., DIPL.-PHYS. DR.RER.NAT., PAT.- U. RECHTSANW., 8000 MUENCHEN

8328 Change in the person/name/address of the agent

Free format text: STREHL, P., DIPL.-ING. DIPL.-WIRTSCH.-ING. SCHUEBEL-HOPF, U., DIPL.-CHEM. DR.RER.NAT. GROENING, H.,DIPL.-ING., PAT.-ANWAELTE, 8000 MUENCHEN

8339 Ceased/non-payment of the annual fee