Classifications

• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
  • A61G17/00—Coffins; Funeral wrappings; Funeral urns
  • A61G17/007—Coffins; Funeral wrappings; Funeral urns characterised by the construction material used, e.g. biodegradable material; Use of several materials
  • A61G17/0136—Plastic material
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
  • A61G17/00—Coffins; Funeral wrappings; Funeral urns
  • A61G17/06—Sacks for corpses; Corpse wrappings
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
  • A61G2203/00—General characteristics of devices
  • A61G2203/70—General characteristics of devices with special adaptations, e.g. for safety or comfort
  • A61G2203/90—General characteristics of devices with special adaptations, e.g. for safety or comfort biodegradable

Definitions

• the present invention relates to a polyvinyl alcohol film with delayed aqueous dissolution, its manufacturing process and its application to the burial of corpses.
• polyvinyl alcohol films are obtained from polyvinyl alcohol resin granules, themselves obtained by polymerization, aqueous dissolution, and then saponification of the vinyl acetate produced by the action of acetic acid on acetylene. These granules are then dissolved in water, heated and added with various components and the aqueous mixture obtained is shaped into a film, for example by calendering or extrusion blow molding.
• polyvinyl alcohol films are soluble in water and it is known, by means of thermal or chemical treatments for example, to adjust the solubility of a polyvinyl alcohol film as a function of the temperature. water in which said film is immersed.
• the object of the present invention is to produce a polyvinyl alcohol film whose aqueous dissolution, instead of being practically instantaneous as for known films, is delayed in time by a few months; the film according to the invention can then be used, among other applications, for the production of shrouds, body covers, coffin bowls, etc.
• the polyvinyl alcohol film with delayed aqueous dissolution, obtained from saponified polyvinyl alcohol resin is remarkable in that its thickness is chosen between 30 and 100 u and in that the basic polyvinyl alcohol resin contains a proportion by weight of residual vinyl acetate, not saponified, of between 0.2 and 0.7%.
• the polyvinyl alcohol film according to the invention can be used for all the applications for which a delayed dissolution film is required.
• the film according to the invention is particularly suitable for being used to make shrouds, body covers, coffin bowls, etc., which must have great mechanical resistance for a few tens of days. following their bringing into contact with the body of a dead being and corresponding to the manipulations and the presentation of said body before its burial, but entirely biodegradable after several months of contact, that is to say after burial.
• the polyvinyl alcohol film according to the invention can be obtained, in a known manner, by extrusion blow molding or by calendering. However, it seems preferable to use the calendering method (continuous casting).
• an anti-blocking agent such as metal stearates and / or ethoxylated polyols, in order to prevent the different turns of the coil from sticking to each other.
• opacifiers can be added thereto, such as titanium dioxide and calcium carbonate, in a proportion by weight of between 10 and 25%. It will be noted that such an opacifier indirectly plays the role of retarder of aqueous dissolution, since it influences the initial quantity of water necessary for the aqueous dissolution of the resin.
• a process is used in which a polyvinyl alcohol resin is used, the saponification of vinyl acetate of which is such that the proportion by weight of non-residual vinyl acetate saponified, is between 0.2% and 0.7% and a film is produced whose thickness is between 30 and 100 ⁇ .
• the process for manufacturing the polyvinyl alcohol film in accordance with the present invention is of the so-called "calendering" type, in which all of the components, including water, are mixed continuously and the aqueous mixture is heated, then said mixture is spread on a calender where it is heated for spreading and evaporation of water.
• the aqueous mixture before spreading on the grille, is heated to a temperature between 80 and 95 ° C. Indeed, it has been noted that the temperature at which the mixture was spread on the calender also had an influence on the aqueous solubility of the film obtained. The range between 80 and 95 ° C is particularly favorable for the result to be obtained.
• the aqueous mixture is subjected to deaeration before spreading.
• the aqueous mixture is heated to 85 ° C. and after complete dissolution of the components, the mixture is transmitted to a deaeration tank, then to a spreading calender adjusted to the thickness of 80 ⁇ .
• the calender is heated to evaporate the water from the film and the film is dried, then wound in a reel.
• Test conditions 96 hours at 32 ° C in a saturated atmosphere.
• the corpse can be introduced into the envelope made in advance and comprising an opening, after which this opening is closed by welding, for example by means of a portable heat sealer available to the doctor, or any other authorized person.
• the envelope thus tightly encloses the corpse and prevents odors of decomposition from spreading.
• the body can remain like this for several days without resulting in odor emissions or hygienic difficulties.
• the welding and the material of the envelope are waterproof and on the other hand, the action of the liquid emissions coming from the corpse on the material of the envelope can for example lead to a beginning of destruction of it in a few dozen days.
• the envelope may be at least partially transparent to allow exposure of the body to family and friends before burial. However, it is advantageous that the envelope is only transparent at the level of the face and is opaque elsewhere, so that the corpse can be enclosed without clothing inside the cover.
• the corpse enclosed in its envelope can be introduced into a coffin.
• the envelope according to the invention it is possibly possible to remove said coffin, which is then replaced by said envelope.
• the opaque part of this envelope can be decorated and / or colored and / or simulate, for example, clothes.
• the envelope can be scented and / or sanitized.
• the film according to the invention can also be used to produce biodegradable coffin basins.

Landscapes

• Life Sciences & Earth Sciences (AREA)
• Animal Behavior & Ethology (AREA)
• General Health & Medical Sciences (AREA)
• Public Health (AREA)
• Veterinary Medicine (AREA)
• Health & Medical Sciences (AREA)
• Manufacture Of Macromolecular Shaped Articles (AREA)
• Compositions Of Macromolecular Compounds (AREA)
• Agricultural Chemicals And Associated Chemicals (AREA)
• Processes Of Treating Macromolecular Substances (AREA)
• Biological Depolymerization Polymers (AREA)
• Building Environments (AREA)
• Catching Or Destruction (AREA)

Priority Applications (1)

Applications Claiming Priority (2)

Publications (3)

Family

ID=9278189

Family Applications (1)

Country Status (4)

Cited By (14)

Family Cites Families (12)

• 1982
  • 1982-10-12 FR FR8217063A patent/FR2534137B1/fr not_active Expired
• 1983
  • 1983-10-12 DE DE8383401991T patent/DE3377652D1/de not_active Expired
  • 1983-10-12 AT AT83401991T patent/ATE36342T1/de not_active IP Right Cessation
  • 1983-10-12 EP EP83401991A patent/EP0107576B1/de not_active Expired

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