SU733518A3 - Method of making sealing gaskets - Google Patents

Method of making sealing gaskets Download PDF

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Publication number
SU733518A3
SU733518A3 SU772464953A SU2464953A SU733518A3 SU 733518 A3 SU733518 A3 SU 733518A3 SU 772464953 A SU772464953 A SU 772464953A SU 2464953 A SU2464953 A SU 2464953A SU 733518 A3 SU733518 A3 SU 733518A3
Authority
SU
USSR - Soviet Union
Prior art keywords
substrate
thread
plastic
sealing gaskets
plastic material
Prior art date
Application number
SU772464953A
Other languages
Russian (ru)
Inventor
Девершер Жан
Original Assignee
Сефилак (Фирма)
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 Сефилак (Фирма) filed Critical Сефилак (Фирма)
Application granted granted Critical
Publication of SU733518A3 publication Critical patent/SU733518A3/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/02—Sealings between relatively-stationary surfaces
    • F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
    • F16J15/10—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing
    • F16J15/108—Special methods for making a non-metallic packing
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14778—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the article consisting of a material with particular properties, e.g. porous, brittle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/02—Sealings between relatively-stationary surfaces
    • F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
    • F16J15/10—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing
    • F16J15/104—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing characterised by structure
    • F16J15/106—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing characterised by structure homogeneous
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14336—Coating a portion of the article, e.g. the edge of the article
    • B29C45/14344—Moulding in or through a hole in the article, e.g. outsert moulding
    • B29C2045/14352—Moulding in or through a hole in the article, e.g. outsert moulding injecting into blind holes
    • 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
    • B29K2021/00—Use of unspecified rubbers as moulding material
    • 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
    • B29L2031/26—Sealing devices, e.g. packaging for pistons or pipe joints

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)

Abstract

Process for prodn. of thread of elastomeric or thermosetting plastic material on a flat substrate, fr mfr. of gaskets, is carried out by pressing or injection moulding the viscous plastic material, with a Mooney viscosity of 20-90 at room temp., on a substrate in a mould cavity. The plastic has greater adhesion to the substrate than to the mould, and the thread is vulcanised or completely polymerised by heating in a kiln or by hot pressing. The plastic used may be nitrile rubber, polyacrylic resin, silicone, fluorinated elastomers partic. copolymers or vinylidene fluoride with hexafluoropropylene and/or epoxy resins. The thread can be applied within few secs. without loss of material and with a thickness of =several mm.

Description

1one

Изобретение относитс  к резиновой промыоцзенности, в частности к способу получени  уплотнительных прокладок .This invention relates to a rubber industry, in particular to a method for producing sealing gaskets.

Известен способ получени  уплотнительных прокладок формованием полимерной композиции в форме и термообработкой сформованного полуфабриката дл  полимеризации или вулканизации 1. При этом термообработку провод т не вынима  из (что повышает длительность способа).A known method of obtaining gaskets by molding the polymer composition in the form and heat treatment of a molded semi-finished product for polymerization or vulcanization 1. In this case, the heat treatment is carried out not removed from (which increases the duration of the method).

Известный способ малопроизводителен; кроме того, при его осуществлении имеют место большие потери композиции.The known method is inefficient; in addition, in its implementation there are large losses of the composition.

Цель изобретени  состоит в повышении производительности способа и в снижении потерь полимерной композиции .The purpose of the invention is to increase the productivity of the process and to reduce the loss of the polymer composition.

Поставленна  цель достигаетс  тем, что по способу по.пучени  уплотнительных прокладок формованием полимерной композиции в форме и термообработкой сформованного полуфабриката дл  полимеризации .или вулканизации полимера, форму укла .дывают на по.цложку и формованиеThe goal is achieved by the fact that according to the method of pulling sealing gaskets by molding the polymer composition in the form and heat treatment of the molded semi-finished product for polymerization or vulcanization of the polymer, the shape of the mold is removed on the foil and molding

провод т под давлением 50-2000 бар композиции с в зкостью по Муни 20-90, на основе полимера, выбранного из группы:бутадиеннитрильный каучук, полиакрилат, силиконовый каучук, фторкаучук, эпоксидна  смола, имеющей адгезию к подложке большую, чем адгези  к форме, а термообработку полуфабриката провод т вне формы.conducted under pressure of 50-2000 bar of the composition with Mooney viscosity 20-90, based on a polymer selected from the group of: nitrile rubber, polyacrylate, silicone rubber, fluororubber, epoxy resin adhesion to the substrate greater than adhesion to the form, and the heat treatment of the semi-finished product is carried out out of shape.

10ten

Композиции на основе указанных выше полимеров с в зкостью по Муни 20-90 хорошо формуютс , заполн   подложку, имеют адгезию к по.цложке большую, чем адгези  к форме (поэто15 му полуфабрикат - незаструктурированна  заготовка без особых затруднений вынимаетс  из форкы, не мен   своей конфигурации),Compositions based on the above polymers with a Mooney viscosity of 20–90 are well molded, fill the substrate, have adhesion to the substrate more than adhesion to the form (therefore, the semi-finished product - the unstructured preform is easily removed from the forka without changing its configuration ),

Ниже приведен пример осуществле20 ни  способа без конкретного указани  на полимер, подразумева  под последним любой из описанных ранее.The following is an example of a method without specifying a polymer, meaning by the latter any of those described earlier.

В качестве подложки используют пористые материалы на основе асбес25 товых или целлюлозных волокон, при желании армированных внутри металлическими элементами, металлические материалы такие, как, например, стальные листы или листы кз легких Porous materials based on asbestos or cellulose fibers, if desired reinforced with metal elements, metal materials such as, for example, steel sheets or light-duty sheets, are used as a substrate.

Л , сплавов (в этом случае предпочтительно чтобы их поверхность была матовой и ше1роховатой, например, за счет пескоструйной обработки дл  обеспечени  наилучшей адгезионной способности).L alloys (in this case, it is preferable that their surface is matte and roughened, for example, by sandblasting to ensure the best adhesiveness).

Плоскую подложку, выполненную, например, из асбестового картона, армированного металлической прослойкой , укладывают в форму.A flat substrate made of, for example, asbestos cardboard, reinforced with a metal layer, is placed in a mold.

Затем с помощью поршн  под давлением от 50 до 2000 бар инжектируют эластомерный или термореактивный материал в в зком состо нии (в зкос по Муни 20-90), который заполн ет полость формы. Форму разнимах)т, полуфабрикат (заготовку) вынимают и вулканизуют или полимеризуют, пропуска  через сушильную или туннельн печь, при этом заготовка сохран ет свои размеры.Then, an elastomeric or thermosetting material is injected into a viscous state (Mooney 20–90), which fills the mold cavity, with a piston under pressure from 50 to 2000 bar. The form is separated, the semi-finished product (billet) is removed and vulcanized or polymerized, passed through a drying or tunnel kiln, while the billet retains its dimensions.

Возможно гор чее прессование заготовки с помощью пресса, плиты которого нагревают до нужной температуры , что позвол ет сообщить заготовке желаемую окончательную форм котора  может отличатьс  от формы, полученной при.формовании.A hot pressing of the preform is possible with a press, the plates of which are heated to the desired temperature, which allows the preform to give the desired final shape that may differ from the shape obtained during the shaping process.

Изготовленна  таким образом, например , герметична  уплотнительна  прокладка выдерживает не очень большое давление. Поэтому при применени ее в качестве прокладки в головке цилиндров существует опасность разрыва во врем  сжати , поскольку основное механическое воздействие испытывает несжимаемое полимерное покрытие .Made in this way, for example, an airtight sealing gasket withstands not very large pressure. Therefore, when using it as a gasket in the cylinder head, there is a danger of rupture during compression, since the main mechanical effect is an incompressible polymer coating.

Дл  устранени  недостатка основу изготавливают из сжимаемого материала , например пористого материала на основе асбестовых или целлюлозны волокон; и покрытие вулканизуют в термопечи или прессе или полимеризуют (возможно без давлени ).To eliminate the drawback, the substrate is made of compressible material, for example, a porous material based on asbestos or cellulose fibers; and the coating is vulcanized in thermal ovens or presses or polymerized (possibly without pressure).

В том случае, когда подложка выполнена из несжимаемого материала, например из металла, ленту вулканизуют или полимеризуют при термопрессовании при значительном давлении.In the case when the substrate is made of an incompressible material, for example, of metal, the tape is vulcanized or polymerized by thermal pressing under considerable pressure.

В соответствии с изобретением значительно сокращаетс  продолжительность осуществлени  способа за счет проведени  вулканизации или полимеризации заготовки (полуфабриката) вне формы, в результате чего повышаетс  производительность способа. В отличие от прессового и литьевого методов значительно сокращгистс  и потери материалов, так как отсутствует выпрессоека, а также завулканизованные отходы в литьевых каналах.In accordance with the invention, the duration of the process is significantly reduced by carrying out the vulcanization or polymerization of the preform (semi-finished product) outside the mold, thereby increasing the productivity of the method. In contrast to the press and injection molding methods, there is a significant reduction in the loss of materials and materials, since there is no discharge, as well as vulcanised waste in the injection channels.

Claims (1)

1. Патент Великобритании № 1356382, кл. С 3 N, опублик.1974 (прототип) .1. Patent of Great Britain No. 1356382, cl. C 3 N, publish.1974 (prototype).
SU772464953A 1976-04-02 1977-03-31 Method of making sealing gaskets SU733518A3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7610172A FR2366113A1 (en) 1976-04-02 1976-04-02 Plastic thread on flat substrate for gasket - with greater adhesion of plastic to substrate than to mould (NL 4.10.77)

Publications (1)

Publication Number Publication Date
SU733518A3 true SU733518A3 (en) 1980-05-05

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ID=9171514

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SU772464953A SU733518A3 (en) 1976-04-02 1977-03-31 Method of making sealing gaskets

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FR (1) FR2366113A1 (en)
SU (1) SU733518A3 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4421623A1 (en) * 1994-06-21 1996-01-04 Thera Ges Fuer Patente Multi-component, cationically curing epoxy materials and their use as well as processes for producing hardened materials

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004034236A1 (en) * 2004-07-15 2006-02-16 Federal-Mogul Sealing Systems Bretten Gmbh Seal with carrier and its manufacture

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4421623A1 (en) * 1994-06-21 1996-01-04 Thera Ges Fuer Patente Multi-component, cationically curing epoxy materials and their use as well as processes for producing hardened materials

Also Published As

Publication number Publication date
FR2366113A1 (en) 1978-04-28
FR2366113B1 (en) 1980-05-23

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