FR2488829A1 - Microporous substrate and compact top layer-contg. article prodn. - by vulcanising blowing agent-contg. and quicker-vulcanising blowing agent-free blanks - Google Patents
Microporous substrate and compact top layer-contg. article prodn. - by vulcanising blowing agent-contg. and quicker-vulcanising blowing agent-free blanks Download PDFInfo
- Publication number
- FR2488829A1 FR2488829A1 FR8115608A FR8115608A FR2488829A1 FR 2488829 A1 FR2488829 A1 FR 2488829A1 FR 8115608 A FR8115608 A FR 8115608A FR 8115608 A FR8115608 A FR 8115608A FR 2488829 A1 FR2488829 A1 FR 2488829A1
- Authority
- FR
- France
- Prior art keywords
- vinyl acetate
- weight
- ethylene
- parts
- blowing agent
- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D35/00—Producing footwear
- B29D35/12—Producing parts thereof, e.g. soles, heels, uppers, by a moulding technique
- B29D35/14—Multilayered parts
- B29D35/142—Soles
-
- 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
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
- B29C44/04—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles consisting of at least two parts of chemically or physically different materials, e.g. having different densities
- B29C44/0461—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles consisting of at least two parts of chemically or physically different materials, e.g. having different densities by having different chemical compositions in different places, e.g. having different concentrations of foaming agent, feeding one composition after the other
-
- 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
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
- C08J9/10—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing nitrogen, the blowing agent being a compound containing a nitrogen-to-nitrogen bond
-
- 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
- B29C37/00—Component parts, details, accessories or auxiliary operations, not covered by group B29C33/00 or B29C35/00
- B29C37/0025—Applying surface layers, e.g. coatings, decorative layers, printed layers, to articles during shaping, e.g. in-mould printing
- B29C37/0028—In-mould coating, e.g. by introducing the coating material into the mould after forming the article
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/24—Condition, form or state of moulded material or of the material to be shaped crosslinked or vulcanised
-
- 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
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/04—Homopolymers or copolymers of ethene
- C08J2323/08—Copolymers of ethene
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
Description
La présente invention concerne un procédé de fabrication d'un corps moulé mousse microporeux,qui consiste à placer dans un moule avec ajustement étroit une ébauche en copolymère d'éthylène et d'acétate de vinyle qui n'est pas vulcanisée et qui contient un agent porogène et à vulcaniser avec dégagement du gaz porogène;
L'invention concerne en outre un corps moulé mousse microporeux fabriqué par un tel procédé.The present invention relates to a method for manufacturing a microporous foam molded body, which consists in placing in a mold with close fitting a blank made of ethylene vinyl acetate copolymer which is not vulcanized and which contains an agent pore-forming and to vulcanize with release of the pore-forming gas;
The invention further relates to a molded microporous foam body produced by such a method.
Au brevet allemand I 729 845, on décrit un procédé de fabrication d'un corps moulé en caoutchouc mousse à cellulesfermées,suivant lequel on met dans un moule avec ajustement étroit une ébauche non vulcanisée contenant l'agent porogène et on vulcanise avec dégagement du gaz porogène. Lors de l'ouverture du moule, le corps moulé vulcanisé se dilate brusquement pour prendre sa dimension finale : "il saute". In German patent I 729 845, a method of manufacturing a molded body of closed cell foam rubber is described, according to which an unvulcanized blank containing the blowing agent is placed in a mold with close fit and vulcanized with evolution of gas. porogenic. When the mold is opened, the vulcanized molded body suddenly expands to take on its final dimension: "it jumps".
Lors de la fabrication de tels corps moulés pour la préparation de semelles de chaussures, on utilise habituellement un copolymère d'éthylène et d'acétate de vinyle (EVA). Un tel corps moulé mousse en EVA a cependant l'inconvénient que sa résistance à l'usure par frottement est relativement faible. In the manufacture of such molded bodies for the preparation of shoe soles, a copolymer of ethylene and vinyl acetate (EVA) is usually used. However, such a molded EVA foam body has the drawback that its resistance to wear by friction is relatively low.
L'invention vise un procédé de fabrication d'un corps moulé mousse microporeux du type mentionné,ainsi qu'un corps moulé mousse fabriqué par ce procédé dans lequel l'inconvénient mentionné ci-dessus ne se produit pas. The invention relates to a method of manufacturing a microporous foam molded body of the type mentioned, as well as a foam molded body manufactured by this method in which the above-mentioned drawback does not occur.
L'invention vise notamment un procédé et un corps moulé dans lequel on obtient une résistance à l1usu- re nettement plus élevée. The invention relates in particular to a process and a molded body in which a significantly higher wear resistance is obtained.
Le procédé suivant l'invention est caractérisé en ce qu'il consiste à placer dans le moule une première ébauche,contenant l'agent porogène,en un premier mélange de copolymère d'éthylène et d'acétate de vinyle et une seconde ébauche ,ne contenant pas d'agent porogène,en un second mélange de copolymère d'éthylène et d'acétate de vinyle se vulcanisant plus rapidement que le premier, et à vulcaniser les deux ébauches ensemble. The method according to the invention is characterized in that it consists in placing in the mold a first blank, containing the blowing agent, in a first mixture of ethylene and vinyl acetate copolymer and a second blank, containing no blowing agent, into a second mixture of ethylene and vinyl acetate copolymer which vulcanizes faster than the first, and to vulcanize the two blanks together.
Le corps moulé fabriqué par ce procédé se caractérise par un corps de base microporeux et par une couche de finition compacte,ne contenant aucun pore,d'une seule pièce avec le corps de base. The molded body produced by this process is characterized by a microporous base body and by a compact top layer, containing no pores, in one piece with the base body.
Les avantages procurés par l'invention tiennent notamment en ce qu'urane couche de finition compacte,ne contenant pas de pore, a une résistance à l'usure par le frottement bien plus élevée qu'un corps moulé mousse microporeux habituel, de sorte qu'en utilisant cette couche de finition pleine et compacte comme couche d'usure, on peut augmenter nettement la longévité d'un tel corps moulé. The advantages provided by the invention arise in particular from the fact that uranium compact top layer, containing no pore, has a much higher resistance to wear by friction than a usual microporous foam molded body, so that 'By using this solid and compact topcoat as a wear layer, one can significantly increase the longevity of such a molded body.
#En outre ,un tel corps moulé d'une pièce peut être fabriqué en un seul stade opératoire sans avoir besoin de stades di#~#ts,comme ce serait par exemple le cas si l'on devait coller la couche de finition sur la couche de base microporeuse. #Moreover, such a one-piece molded body can be manufactured in a single operating stage without the need for di # ~ # ts stages, as would be the case for example if the finishing layer had to be glued to the microporous base layer.
On a établi par des essais que les deux couches du corps moulé "sautent" de la même manière lors de l'ouvefture mentionnée ci-dessus du moule, sans qu'il soit ainsi porté atteinte à la liaison entre les deux couches. It has been established by tests that the two layers of the molded body "jump" in the same way during the opening mentioned above of the mold, without thereby being damaged the connection between the two layers.
La vitesse de vulcanisation du second mélange de copolymère d'éthylène et d'acétate de vinyle doit être telle que ce mélange de copolymère d'éthylène et d'acétate de vinyle vulcanise suffisamment rapidement pour empêcher la pénétration du gaz porogène obtenu dans ébauche correspondante et pour assurer ainsi qu'aucune sorte de pore ou de microvésicule ne puisse pénétrer dans la couche de finition compacte qui se forme. The vulcanization rate of the second mixture of ethylene and vinyl acetate copolymer must be such that this mixture of ethylene and vinyl acetate copolymer vulcanizes quickly enough to prevent the penetration of the pore-forming gas obtained in the corresponding blank and to ensure that no kind of pore or microvesicle can penetrate the compact top coat that forms.
La couche de finition compacte est relativement dure, en sorte que#lorsqu'elle est utilisée comme semelle de chaussure , tous les chocs sont transmis sans être amortis. Pour améliorer les qualités d'usage, il faut donc faire en sorte que ce mélange de copolymère d'éthy lène et d acétate de vinyle soit plus mou que le mélange de copolymère d'éthylène et d'acétate de vinyle cellulaire, ce qui peut être obtenu par exemple par l'addition d'un plastifiant convenable. The compact top coat is relatively hard, so that # when used as a shoe sole, all shocks are transmitted without being absorbed. To improve the qualities of use, it is therefore necessary to ensure that this mixture of ethylene copolymer and vinyl acetate is softer than the mixture of ethylene copolymer and cellular vinyl acetate, which can be obtained for example by the addition of a suitable plasticizer.
Comme,notamment lors de la fabrication de semelles de chaussure , on utilise en général des corps moulés en forme de plaques, on fabrique, suivant un mode d'exécution préféré du procédé suivant l'invention, les deux ébauches par calandrage et ensuite on les réunit ensemble par doublage en leur faisant subir un second calandrage, ce qui crée une plaque d'une seule pièce qui est placée dans le moule et qui est vulcanisée. As, in particular during the manufacture of shoe soles, molded bodies in the form of plates are generally used, the two blanks are manufactured by calendering in a preferred embodiment of the method and then they are joined together by doubling by subjecting them to a second calendering, which creates a one-piece plate which is placed in the mold and which is vulcanized.
Suivant un autre mode d'exécution préféré du procédé suivant l'invention, on étend les deux mélanges, et notamment le premier mélange de copolymère d'éthylène et d'acétate de vinyle,par d'autres polymères afin de compenser quelque peu les coûts relativement élevés du copolymère d'éthylène et d'acétate de vinyle. According to another preferred embodiment of the process according to the invention, the two blends, and in particular the first blend of ethylene and vinyl acetate copolymer, are extended with other polymers in order to somewhat offset the costs relatively high of the copolymer of ethylene and vinyl acetate.
Comme polymèresde coupe qui conviennent,on peut utiliser le polyéthylène (PE), le caoutchouc isoprénique (IR) ou le caoutchouc styrène-butadiène (SBR). As suitable cutting polymers, polyethylene (PE), isoprene rubber (IR) or styrene-butadiene rubber (SBR) can be used.
L'exemple suivant illustre l'invention. The following example illustrates the invention.
On prépare un premier mélange de copolymère d'éthylène et d'acétate de vinyle à partir des constituants suivants
100 parties en poids de copolymère d'éthylène et d'a
cétate de vinyle contenant de 16 à 24% en poids
et notamment 20% en poids d'acétate de vinyle.A first mixture of ethylene and vinyl acetate copolymer is prepared from the following constituents
100 parts by weight of ethylene-a copolymer
vinyl acetate containing 16 to 24% by weight
and in particular 20% by weight of vinyl acetate.
de 2,7 à 3,3 et notamment 3,0 parties de peroxyde,
de 1,5 à 2,1 et notamment 1,8 parties en poids d'a
gent porogène, (azodicarbonamide);
de 30 à 46 et notamment 38 parties d'acide silicique
obtenu par précipitation et à pouvoir de renforcement
élevé.from 2.7 to 3.3 and in particular 3.0 parts of peroxide,
from 1.5 to 2.1 and in particular 1.8 parts by weight of a
gent porogenic, (azodicarbonamide);
from 30 to 46 and in particular 38 parts of silicic acid
obtained by precipitation and with reinforcing power
Student.
de 1 à 3 et notamment 2 parties en poids d'acide stéa
rique. from 1 to 3 and in particular 2 parts by weight of stea acid
risk.
On prépare un second mélange de copolymère d'éthylène et d'acétate de vinyle ne contenant pas d'agent porogène à partir des constituants suivants
100 parties en poids de copolymère d'éthylène et
d'acétate de vinyle comprenant de 25 à 31% en
poids et notamment 28% en poids d'acétate de
vinyle,
de 3,2 à 3,8 et notamment 3,5 parties en poids de
peroxyde,
de 15 à 25 et notamment 20 parties en poids d'acide
silicique obtenu par précipitation ayant un pouvoir
de renforcement élevé,
de 5 à 15 et notamment 10 parties en poids de plas
tifiant,
de 2 à 4 et notamment 3 parties en poids d'acide
stéarique.A second mixture of ethylene and vinyl acetate copolymer containing no blowing agent is prepared from the following constituents
100 parts by weight of ethylene copolymer and
vinyl acetate comprising from 25 to 31% in
weight and in particular 28% by weight of acetate
vinyl,
from 3.2 to 3.8 and in particular 3.5 parts by weight of
peroxide,
from 15 to 25 and in particular 20 parts by weight of acid
silicic acid obtained by precipitation
high reinforcement,
from 5 to 15 and in particular 10 parts by weight of plas
tifier,
from 2 to 4 and in particular 3 parts by weight of acid
stearic.
On transforme ces deux mélanges de copolymère d'éthylène et d'acétate dé vinyle par calandrage en des ébauches en forme de plaques que l'on assemble ensuite l'une à l'autre par un autre calandrage, en les réunissant ainsi en une ébauche unitaire. These two mixtures of ethylene and vinyl acetate copolymer are transformed by calendering into blanks in the form of plates which are then assembled together by another calendering, thus bringing them together into a blank. unitary.
On place cette ébauche constituée des deux mélanges différents non vulcanisés de copolymère d'éthylène et d'acétate de vinyle dans un moule avec ajustement étroit, le volume du moule à l'état fermé correspondant à peu près au volume de l'ébauche. This blank consisting of two different unvulcanized mixtures of ethylene and vinyl acetate copolymer is placed in a mold with close fit, the volume of the mold in the closed state roughly corresponding to the volume of the blank.
En réchauffant ce moule, on fait commencer la vulcanisation des deux mélanges de copolymère d'éthylène et d'acétate de vinyle; en même temps on libère le gaz porogène de l'agent porogène -du premier mélange de copolymère et d'acétate de vinyle, ce gaz porogène donnant naissance à de petites vésicules microporeuses dans la partie correspondante de l'ébauche et faisant s'expanser cette partie. By heating this mold, the vulcanization of the two blends of ethylene and vinyl acetate copolymer is started; at the same time, the pore-forming gas is released from the pore-forming agent - from the first mixture of copolymer and vinyl acetate, this pore-forming gas giving rise to small microporous vesicles in the corresponding part of the blank and causing this to expand. part.
Comme le second mélange de copolymère d'éthylène et d'acétate de vinyle vulcanise plus rapidement que le premier, le gaz porogène libéré ne peut pas pénétrer dans le second mélange de copolymère d'éthylène et d'acétate de vinyle qui est déjà vulcanisé pour l'essentiel, de sorte que le corps moulé vulcanisé présente une couche de base microporeuse et une couche de finition compacte, d'une pièce avec la couche de base, couche de finition dans laquelle il n'y a pas de micropores. As the second mixture of ethylene and vinyl acetate copolymer vulcanizes faster than the first, the pore gas released cannot penetrate the second mixture of ethylene and vinyl acetate copolymer which is already vulcanized to the essentials, so that the vulcanized molded body has a microporous base layer and a compact top layer, in one piece with the base layer, a top layer in which there are no micropores.
Quand, après avoir achevé la vulcanisation des deux mélanges de copolymère d'éthylène et d'acétate de vinyle, on ouvre le moule, la couche de base microporeuse du corps moulé mousse saute pour prendre son volume final; mais la couche compacte de finition a, en dépit de sa vulcanisation à chaud, une thermoplasticité encore suffisante pour s'accommoder de cette augmentation brusque de volume du corps de base microporeux, de sorte que l'expansion du corps moulé après l'ouverture du moule peut s'effectuer sans porter atteinte à la liaison entre les deux couches. When, after having completed the vulcanization of the two mixtures of ethylene and vinyl acetate copolymer, the mold is opened, the microporous base layer of the foam molded body jumps to take its final volume; but the compact finishing layer has, despite its hot vulcanization, a thermoplasticity still sufficient to accommodate this sudden increase in volume of the microporous base body, so that the expansion of the molded body after the opening of the mold can be made without affecting the connection between the two layers.
Le plastifiant contenu dans la couche de finition compacte, par exemple un plastifiant à l'acide phtalique, diminue la dureté de la couche de finition, de sorte que,lorsque l'on utilise un tel corps moulé comme semelle extérieure d'une chaussure, par exemple pour une chaussure de marche, il se produit un certain amortissement à chaque pas. The plasticizer contained in the compact top layer, for example a phthalic acid plasticizer, reduces the hardness of the top layer, so that, when such a molded body is used as the outer sole of a shoe, for example for a walking shoe, there is a certain damping with each step.
Une telle semelle extérieure en un corps de base microporeux et en une couche de finition compacte donne aussi un meilleur effet esthétique,qui peut être encore souligné par exemple par l'utilisation de mélanges de couleurs différentes. Such an outsole in a microporous base body and in a compact top coat also gives a better aesthetic effect, which can be further emphasized for example by the use of mixtures of different colors.
Claims (8)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3031792A DE3031792C2 (en) | 1980-08-22 | 1980-08-22 | Process for the production of a microporous foam molding |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2488829A1 true FR2488829A1 (en) | 1982-02-26 |
| FR2488829B1 FR2488829B1 (en) | 1985-08-09 |
Family
ID=6110229
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR8115608A Expired FR2488829B1 (en) | 1980-08-22 | 1981-08-12 | METHOD FOR MANUFACTURING A MICROPOROUS FOAM MOLDED BODY AND MOLDED BODY MANUFACTURED BY SUCH A METHOD |
Country Status (5)
| Country | Link |
|---|---|
| AT (1) | AT376609B (en) |
| DE (1) | DE3031792C2 (en) |
| FR (1) | FR2488829B1 (en) |
| IT (1) | IT1137850B (en) |
| YU (1) | YU191481A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998058992A1 (en) * | 1997-06-19 | 1998-12-30 | Juan Redin Gorraiz | Process for fabricating shoe soles made of expanded rubber |
| EP1238790A1 (en) * | 2001-03-08 | 2002-09-11 | adidas International B.V. | Midsole with support element |
| EP1281506A1 (en) * | 2001-08-02 | 2003-02-05 | Ipsa | Process for the production by moulding of a double density sole for footwear and in particular for safety shoes or sport shoes |
| EP1379578A1 (en) * | 2001-02-23 | 2004-01-14 | Phat Cushion LLC | Foam cushion and method of making and using the same |
| US7040706B2 (en) | 2002-12-09 | 2006-05-09 | Phat Cushion Llc | Seat and method of making same |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3346441C1 (en) * | 1983-12-22 | 1985-10-17 | Metzeler Kautschuk GmbH, 8000 München | Mould for producing a moulded body from an elastomeric foam |
| DE4412179C2 (en) * | 1994-04-08 | 1997-06-05 | Oped Gmbh Orthopaedische Produ | Molding and method for producing the molding |
| CN111212731B (en) * | 2017-06-26 | 2022-06-21 | 陶氏环球技术有限责任公司 | Composite material with direct bonding between rubber and foam |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3007209A (en) * | 1958-05-12 | 1961-11-07 | United Shoe Machinery Corp | Methods of vulcanizing outsoles onto shoe bottoms |
| BE673574A (en) * | 1964-12-12 | 1966-04-01 | ||
| US3342911A (en) * | 1962-10-29 | 1967-09-19 | Funahashi Takaji | Process for producing composite porous material |
| DE1729845B1 (en) * | 1966-03-04 | 1970-12-10 | Volcrepe Ltd | Method of making a closed-cell foam rubber molded article |
| US3903015A (en) * | 1971-01-18 | 1975-09-02 | Bayer Ag | Blowing agent additive containing azodicarbonamide and an aromatic sulfinic acid |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB973691A (en) * | 1960-01-20 | 1964-10-28 | C I C Engineering Ltd | Improved products composed of microcellular rubber and similar elastomeric substances |
| DE1729593B1 (en) * | 1967-09-22 | 1971-10-07 | Continental Gummi Werke Ag | Process for the production of a molded body made of rubber or similar materials with a porous core |
-
1980
- 1980-08-22 DE DE3031792A patent/DE3031792C2/en not_active Expired
-
1981
- 1981-08-05 YU YU01914/81A patent/YU191481A/en unknown
- 1981-08-07 IT IT23442/81A patent/IT1137850B/en active
- 1981-08-12 FR FR8115608A patent/FR2488829B1/en not_active Expired
- 1981-08-13 AT AT0354781A patent/AT376609B/en not_active IP Right Cessation
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3007209A (en) * | 1958-05-12 | 1961-11-07 | United Shoe Machinery Corp | Methods of vulcanizing outsoles onto shoe bottoms |
| US3342911A (en) * | 1962-10-29 | 1967-09-19 | Funahashi Takaji | Process for producing composite porous material |
| BE673574A (en) * | 1964-12-12 | 1966-04-01 | ||
| DE1729845B1 (en) * | 1966-03-04 | 1970-12-10 | Volcrepe Ltd | Method of making a closed-cell foam rubber molded article |
| US3903015A (en) * | 1971-01-18 | 1975-09-02 | Bayer Ag | Blowing agent additive containing azodicarbonamide and an aromatic sulfinic acid |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998058992A1 (en) * | 1997-06-19 | 1998-12-30 | Juan Redin Gorraiz | Process for fabricating shoe soles made of expanded rubber |
| EP1379578A1 (en) * | 2001-02-23 | 2004-01-14 | Phat Cushion LLC | Foam cushion and method of making and using the same |
| EP1379578A4 (en) * | 2001-02-23 | 2004-05-12 | Phat Cushion Llc | Foam cushion and method of making and using the same |
| US6818676B2 (en) | 2001-02-23 | 2004-11-16 | Phat Cushion, Llc | Foam cushion and method of making and using the same |
| EP1238790A1 (en) * | 2001-03-08 | 2002-09-11 | adidas International B.V. | Midsole with support element |
| DE10111229C5 (en) * | 2001-03-08 | 2009-01-29 | Adidas International Marketing B.V. | Sole element with support element, method for its production and shoe with sole element |
| EP1281506A1 (en) * | 2001-08-02 | 2003-02-05 | Ipsa | Process for the production by moulding of a double density sole for footwear and in particular for safety shoes or sport shoes |
| US7040706B2 (en) | 2002-12-09 | 2006-05-09 | Phat Cushion Llc | Seat and method of making same |
Also Published As
| Publication number | Publication date |
|---|---|
| DE3031792C2 (en) | 1984-05-30 |
| IT8123442A0 (en) | 1981-08-07 |
| DE3031792A1 (en) | 1982-03-18 |
| ATA354781A (en) | 1984-05-15 |
| AT376609B (en) | 1984-12-10 |
| YU191481A (en) | 1984-04-30 |
| FR2488829B1 (en) | 1985-08-09 |
| IT1137850B (en) | 1986-09-10 |
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