FR2642961A1 - Improved condom and a method for its production - Google Patents

Improved condom and a method for its production Download PDF

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Publication number
FR2642961A1
FR2642961A1 FR8901767A FR8901767A FR2642961A1 FR 2642961 A1 FR2642961 A1 FR 2642961A1 FR 8901767 A FR8901767 A FR 8901767A FR 8901767 A FR8901767 A FR 8901767A FR 2642961 A1 FR2642961 A1 FR 2642961A1
Authority
FR
France
Prior art keywords
sheath
sheaths
gas
introduction
fluid
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Withdrawn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
FR8901767A
Other languages
French (fr)
Original Assignee
Blanie Paul
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 Blanie Paul filed Critical Blanie Paul
Priority to FR8901767A priority Critical patent/FR2642961A1/en
Publication of FR2642961A1 publication Critical patent/FR2642961A1/en
Withdrawn legal-status Critical Current

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Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F6/00Contraceptive devices; Pessaries; Applicators therefor
    • A61F6/02Contraceptive devices; Pessaries; Applicators therefor for use by males
    • A61F6/04Condoms, sheaths or the like, e.g. combined with devices protecting against contagion
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/24Lining or labelling
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29LINDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2009/00Layered products
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29LINDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2009/00Layered products
    • B29L2009/001Layered products the layers being loose
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29LINDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2024/00Articles with hollow walls
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29LINDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00Other particular articles
    • B29L2031/753Medical equipment; Accessories therefor
    • B29L2031/7538Condoms

Abstract

<P> Object such as a condom characterized in that it consists of at least two elastomeric sheaths, including natural rubber, such as latex or synthetic: an inner sheath and an outer sheath, assembled so that the walls internal of the outer sheath and in that at least the peripheral edges of the sheaths are made integral by any appropriate means to obtain a stable assembly, monobloc, completely sealed and having a high mechanical strength. </ P>

Description

The present invention relates generally to the manufacture of objects whose fragility of the constituents is likely to generate harmful or perverse effects on the capacity of the object obtained to fulfill its functions, which may be particularly the case of constituents which are used for the manufacture of condoms and the condoms themselves
It is known that condoms sold in particular in France must meet an officially approved standard that defines the specifications that must fulfill these objects including: volume and burst pressure, absence of holes and porous areas, storage resistance properties, stability color etc ...

However, recent tests have shown the low reliability of condoms currently marketed. Indeed, among the batches subjected to the official tests and controls, a significant amount (up to 10 'h) of the specimens belonging to these batches notably had a poor seal and a low resistance to the bursting pressure.

Experience shows, therefore, that the currently known conventional condoms do not provide absolute safety, which is particularly serious since they are at present the only effective preventive measure in the fight against sexually transmitted diseases. especially against AIDS.

The need is therefore imperative to have a condom ensuring safety and total reliability and can be manufactured in good economic conditions: this is the purpose of this invention.

Consequently, the subject of the present invention is in the first place an object such as a condom characterized in that it consists of at least two elastomer sheaths, in particular of natural rubber such as latex, or synthetic: an inner sheath and an outer sheath, assembled so that the outer walls of the inner sheath are pressed against the inner walls of the outer sheath, and in that at least the peripheral edges of the two sheaths are secured to one another so that to obtain a stable monobloc assembly, with high mechanical strength and having an absolute seal.

This invention also relates to a method of manufacturing an object as defined above and in particular to a condom characterized in that it comprises the following steps a) introducing under pressure a fluid including a gas, preferably a a neutral gas which is inert with respect to the other constituents of the object, in a first elastomer sheath, in particular made of natural rubber, such as latex, or synthetic, which may be constituted by a conventional condom; and b) position a second elastomer sheath. , preferably similar to the first, inside this first sheath, while maintaining the pressure of the neutral gas in said first sheath c) introducing a fluid including a pressurized gas, such as in particular air, into the second sheath so as to apply the walls against those of the first sheath in which it is positioned, the neutral gas then escaping from the gap between the two sheaths until e that they are pressed against each other by forming a stable monobloc composite sheath and d) at least secure the circular peripheral edges of said sheath monobloc co.mposite thus obtained to prevent any introduction of fluid and in particular gas between the two sheaths pressed against each other.

The method according to the invention, as defined above, is preferably implemented in an enclosure where the two sheaths are positioned as indicated above, this chamber being provided with non-return valves or the like allowing the fluids and in particular the gases to escape, but opposing any introduction of fluids, so that said enclosure can be used as a control device l - it is used for the detection of any leakage in the first sheath or outer sheath, during the introduction of the fluid such as the pressurized neutral gas 2 - it is also used to detect any leakage in the second sheath or inner sheath, and thus in the final product during the introduction of the fluid or gas under pressure in the latter.

It will be understood that the device defined above makes it possible not only to manufacture a condom according to the invention but also simultaneously to provide room-by-piece control of the quality and mechanical characteristics (in particular of the seal, mechanical resistance, fluid impermeability) finally obtained condoms. This possibility of simultaneously manufacturing and control makes it possible to completely automate the entire process of manufacturing and packaging the objects made by means of the invention, without the need, as in conventional methods, to carry out control tests. at random on parts taken from the production line, before being packaged.

As understood from the reading of the method defined above, the latter leads to obtaining an object such as in particular a condom constituted by the combination of at least two sheaths, preferably conventional, which are connected to the one to the other so as to obtain a stable monoblock assembly characterized in particular by an increased mechanical strength much higher than that of a conventional condom. Moreover, even if one of the sheaths used has a defect (porosity, presence of holes) resulting in a loss of tightness, the other sheath however ensures the required seal. Moreover, the condoms made according to the invention have excellent storage ability without aging.

According to the invention, the neutral gas which is introduced into the first cladding and which is chosen so as to have no effect on the other constituents may be, for example, nitrogen, the presence of this neutral gas, residual state between the two sheaths after assembly fr.-l Xermettant to avoid any physical or chemical alteration of the surfaces of the two sheaths in contact with each other and in particular a continuation of vulcanization, due to a presence of air, the elastomer constituting the sheaths. This gives excellent mechanical strength over time and therefore a perfect storage resistance.

According to another characteristic of this invention, the joining of the two sheaths positioned one inside the other can be obtained by any appropriate means: by gluing, by vulcanization or by mechanical means. In the latter case it is possible to use a non-return valve ring holding the circular peripheral edges of the two sheaths against any introduction of air between the walls of the latter pressed against each other.

 Note that in the case where the two sheaths (or more) are secured by vulcanization, the latter can be performed in the device defined above where are made simultaneously manufacturing and control after manufacture. It is sufficient to provide means for heating the chamber of the device, the vulcanization at the desired temperature being performed by maintaining the pressure of the gas in the inner sheath.

According to a variant of the present invention can be interposed between the different sheaths a reinforcing material including mechanical strength and sealing, this material being chosen so that it does not have adverse effects vis-à-vis the elastomeric material constituting the sheaths.

 It follows from reading the above description that the invention provides an object such as an improved condom which is characterized in particular by high reliability, virtually absolute security and excellent storage ability.

It remains understood that this invention is not limited to the various implementation examples described herein but encompasses all variants. Thus, in particular, the invention is not limited to making condoms but applies to the manufacture of all objects of the type defined in the preamble of the present description.

Claims (5)

    RRVENDICATIONS l. Object such as a particular condom characterized in that it consists of at least two elastomeric sheaths, in particular natural rubber, such as latex or synthetic: an inner sheath and an outer sheath, assembled so that the outer walls of the inner sheath are pressed against the inner walls of the outer sheath and in that at least the peripheral edges of the sheaths are secured by any appropriate means to obtain a stable assembly, monobloc, fully sealed and having a high mechanical strength.
  1. 2. A method of manufacturing an object such as in particular a p # booklet according to claim 1 characterized in that it comprises the following steps a) introducing under pressure a fluid, especially a gas, preferably a neutral gas and inert screws with respect to the constituents of the object, in a first elastomer sheath, in particular made of natural rubber, such as latex, or synthetic, which may be constituted by a conventional condom; b) then positioning a second elastomer sheath, preferably similar to the first, inside this first sheath, while maintaining the pressure of the neutral gas in said first sheath; c) introducing a fluid, in particular a gas under pressure, such as in particular air into the second sheath so as to apply the walls against those of the first sheath in which it is positioned, the neutral gas then escaping from the gap between the two sheaths until they are pressed against each other by forming a monobloc composite sheath and at least fastening the peripheral peripheral edges of said monobloc composite sheath thus obtained in order to prevent any introduction of fluid including gas between the two sheaths pressed against each other.
  2. 3. Method according to claim 2 characterized in that the neutral gas introduced under pressure into the first sheath is nitrogen.
  3. 4. Method according to one of claims 2 or 3 characterized in that the securing of the sheaths positioned one in the other is achieved by using an adhesive or by vulcanization.
     5. Method according to one of claims 2 or 3 characterized in that the securing of the sheaths positioned one inside the other is carried out with the aid of a ring forming a non-return valve maintaining the circular peripheral edges desgaines in opposing any introduction of air between the walls of the latter pressed against each other.
  4. 6. Method according to any one of claims 2 to 5 characterized in that interposed between the sheaths a reinforcing material including mechanical strength and tightness, this material being chosen so that it has no harmful effect or harmful to other constituents.
     T. Method according to any one of claims 2 to 5 characterized in that it is implemented in a chamber where the gataa is positioned this chamber being provided with non-return valves allowing the fluids, and especially gas , to escape while opposing any introduction of fluids so that this chamber can be used also as a means of control - the sealing of the outer sheath, by detecting any leaks during the introduction of the fluid and in particular the neutral gas in this sheath - the sealing of the inner sheath and the object finally obtained by detecting any leaks during the introduction of a fluid, in particular a gas under pressure in this sheath.
  5.  8. A method according to claim 7 characterized in that the consolidation of the superimposed sheaths is carried out by vulcanization, said enclosure then being provided with heating means, so as to carry out the vulcanization while maintaining the gas pressure in the inner sheath.
FR8901767A 1989-02-10 1989-02-10 Improved condom and a method for its production Withdrawn FR2642961A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8901767A FR2642961A1 (en) 1989-02-10 1989-02-10 Improved condom and a method for its production

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8901767A FR2642961A1 (en) 1989-02-10 1989-02-10 Improved condom and a method for its production

Publications (1)

Publication Number Publication Date
FR2642961A1 true FR2642961A1 (en) 1990-08-17

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
FR8901767A Withdrawn FR2642961A1 (en) 1989-02-10 1989-02-10 Improved condom and a method for its production

Country Status (1)

Country Link
FR (1) FR2642961A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0809989A1 (en) * 1996-04-30 1997-12-03 Alberto Kopelowicz Improvements in latex prophylactics adhered to a deformed knitting fabric and their manufacturing procedure
US7434581B1 (en) 2007-04-25 2008-10-14 Reddy Alla V K Condoms for reducing failure rate and extending pleasure

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3091000A (en) * 1960-12-05 1963-05-28 American Can Co Container lining
FR1352379A (en) * 1962-03-30 1964-02-14 Huels Chemische Werke Ag A method for dressing containers with a synthetic substance
FR2616062A1 (en) * 1987-06-04 1988-12-09 Roys Etienne Des Prophylactic device of the condom or sheath type

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3091000A (en) * 1960-12-05 1963-05-28 American Can Co Container lining
FR1352379A (en) * 1962-03-30 1964-02-14 Huels Chemische Werke Ag A method for dressing containers with a synthetic substance
FR2616062A1 (en) * 1987-06-04 1988-12-09 Roys Etienne Des Prophylactic device of the condom or sheath type

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0809989A1 (en) * 1996-04-30 1997-12-03 Alberto Kopelowicz Improvements in latex prophylactics adhered to a deformed knitting fabric and their manufacturing procedure
US7434581B1 (en) 2007-04-25 2008-10-14 Reddy Alla V K Condoms for reducing failure rate and extending pleasure

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