HRP931519A2

HRP931519A2 - Multi-purpose plastic keg and a procedure for the production and reconditioning thereof

Info

Publication number: HRP931519A2
Authority: HR
Inventors: Udo Schutz
Original assignee: Schuetz Werke Gmbh Co Kg
Priority date: 1993-12-24
Filing date: 1993-12-24
Publication date: 1997-06-30

Description

Izum se odnosi na bačve za višekratnu uporabu od plastične mase s tijelom bačve koje je oblikovano puhanjem, koje ima masivnu borduru, od stjenke bačve radijalno ispupčenu prema van, smještenu na određenom razmaku ispod otvora bačve, zatim s injekciono prešanim plastičnim poklopcem s vanjskim rubom koji obuhvaća grlo bačve i unutrašnjim rubom koji uranja u grlo bačve ispupčenim iznad dna poklopca ispod otvora bačve, te s brtvenim prstenom postavljenim između vanjskog ruba poklopca i unutrašnjeg ruba poklopca, a koji pomoću zatvarača poklopca naliježe na otvor grla bačve (DE 39 37 613 A1). The invention relates to barrels for multiple use made of plastic mass with a body of the barrel that is molded by blowing, which has a massive border, from the wall of the barrel bulging radially outwards, located at a certain distance below the opening of the barrel, then with an injection-molded plastic cover with an outer edge that includes the neck of the barrel and with an inner edge that dips into the neck of the barrel protruding above the bottom of the cover below the opening of the barrel, and with a sealing ring placed between the outer edge of the cover and the inner edge of the cover, and which, by means of the lid fastener, rests on the opening of the neck of the barrel (DE 39 37 613 A1) .

Strogi zakonski propisi o zaštiti okoliša zahtijevaju prijelaz s bačava za jednokratnu uporabu na bačve za višekratnu uporabu, kao što su na primjer bačve od plastičnih masa ili čelika, zatim prijelaz na bačve većeg volumena kako bi se smanjile zaostale količine u bačvama, te razvoj novih bačava za višekratnu uporabu koje se s ciljem zaštite okoliša mogu ponovno kondicionirati oslobađanjem od štetnih tvari, te koje se u cilju ponovnog kondicioniranja i ispravnog uklanjanja otpada uništavanjem bez ostataka štetnih tvari, npr. spaljivanjem ili regeneracijom materijala izrade, mogu optimalno do kraja isprazniti i lako očistiti. Strict environmental legislation requires a transition from single-use to reusable drums, such as plastic or steel drums, then a transition to larger volume drums to reduce residual amounts in the drums, and the development of new drums for multiple use, which can be re-conditioned with the aim of protecting the environment by removing harmful substances, and which, in order to re-condition and properly remove waste by destroying without residues of harmful substances, e.g. by burning or regenerating the materials of manufacture, can be optimally emptied completely and easily cleaned .

Razvoj tvrdih bačava koje se mogu ponovno kondicionirati i koje su prikladne za uklanjanje otpada, a zaštićene su od kontaminacije štetnim tvarima, pretežno bačava od plastične mase i čelika, doveo je do izuma takve vrste bačava s poklopcem, te bačava s poklopcem i čepom poznatih npr. iz DE 35 39 656 A1 koje su djelomično zamijenile do tada korištene zatvorene bačve s čepom. Takve bačve se prema potrebi opremaju fleksibilnim unutrašnjim ovojem, nazvanim inliner, odn. vrećom od plastične folije, npr. od polietilenske folije ili od, na difuziju, otporne kombinirane koekstrudirane melalno-plastične folije, npr. obostrano na polietilen kasirane aluminijske folije. Bačve s inlinerom su npr. poznate iz DE 88 10 760 U1. Inlineri se primjenjuju kod plastičnih i čeličnih bačava, ako se ove pune proizvodima čije je uklanjanje problematično, kao što su disperzije, npr. boje, a koje se nakon sušenja više ne mogu odstraniti sa stijenke bačve. Inlineri proizvedeni od na difuziju otporne kombinirane folije sprečavaju kod plastičnih bačava difuziju materijala punjenja koji sadržava otapala u stjenku bačve i eventualnu moguću povratnu difuziju otapala iz stjenke bačve. Kod čeličnih bačava učinit će inliner nepotrebnim unutrašnje lakiranje koje se do sada koristilo za zaštitu čeličnog lima od agresivnih medija i korozije. The development of hard drums that can be reconditioned and are suitable for waste removal and are protected from contamination by harmful substances, mainly plastic and steel drums, led to the invention of such types of lidded drums and lidded and stoppered drums known for example .from DE 35 39 656 A1 which partially replaced the previously used closed barrels with a stopper. If necessary, such barrels are equipped with a flexible inner sleeve, called an inliner, or bag made of plastic film, e.g. polyethylene film or diffusion-resistant combined co-extruded metal-plastic film, e.g. aluminum foil coated on both sides with polyethylene. Barrels with inliner are, for example, known from DE 88 10 760 U1. Inliners are used for plastic and steel barrels, if these are filled with products whose removal is problematic, such as dispersions, eg paint, and which, after drying, can no longer be removed from the barrel wall. Inliners produced from diffusion-resistant combined film prevent the diffusion of the filling material containing solvents into the barrel wall and the possible back diffusion of the solvent from the barrel wall in the case of plastic barrels. In the case of steel barrels, the inliner will make internal varnishing, which was used until now to protect the steel sheet from aggressive media and corrosion, unnecessary.

Zadatak ovog izuma bio je razvijanje bačve za višekratnu uporabu koja se nakon korištenja kao zatvorena bačva s čepom može jeftino ponovno kondicionirati u bačvu s poklopcem i širokim grlom ili ponovno u bačvu s čepom. The object of this invention was to develop a reusable keg which, after use as a closed capped keg, can be inexpensively reconditioned into a lidded wide necked keg or back into a capped keg.

Ovaj je zadatak prema izumu riješen plastičnom bačvom za višekratnu uporabu s karakteristikama iz patentnog zahtjeva 1, te postupcima za proizvodnju i ponovno kondicioniranje prema patentnim zahtjevima 4 i 6. According to the invention, this task is solved by a plastic barrel for multiple use with the characteristics from patent claim 1, and the production and reconditioning procedures according to patent claims 4 and 6.

Kombinacija tijela oblikovanog puhanjem sa širokim grlom s na njega zavarivanjem pritiskom ili štrcanjem pričvršćenog injekciono prešanog plastičnog poklopca s čepom otvara mogućnost jeftine proizvodnje bačava s čepom koje odgovaraju najvišim sigurnosnim zahtjevima koji se postavljaju na tekuća opasna sredstva, a koje se jeftinim ponovnim kondicioniranjem mogu preraditi u bačve sa širokim grlom s jednostavnim poklopcem koji se skida ili s poklopcima s čepom s priteznim zapornim prstenom, prikladnim za transport i skladištenje tekućih, granuliranih ili praškastih tvari klasificiranih u niže klase opasnosti. The combination of a blow-molded wide-mouth body with a pressure-welded or injection-molded plastic cap with a cap opens up the possibility of cheaply producing capped drums that meet the highest safety requirements placed on liquid hazardous materials, and which can be reprocessed by inexpensive reconditioning into wide-necked drums with a simple removable cover or with stoppered lids with a tension locking ring, suitable for the transport and storage of liquid, granular or powder substances classified in lower hazard classes.

Plastična bačva za višekratnu uporabu i postupci za njenu proizvodnju i ponovno kondicioniranje prema ovom izumu objašnjeni su u nastavku na osnovu crteža. Na crtežima je prikazano slijedeće: The reusable plastic barrel and the processes for its manufacture and reconditioning according to the present invention are explained below based on the drawings. The drawings show the following:

Crtež 1 isječak iz presjeka područja poklopca prvog izvedbenog oblika bačve s čepom, s poklopcem s čepom pričvršćenim zavarivanjem pritiskom, Figure 1 is a cross-sectional view of the lid area of a first embodiment of a stoppered barrel, with the stoppered lid attached by pressure welding,

Crtež 2 prikaz područja poklopca koji odgovara crtežu 1 s grijaćom površinom za pripremu zavarivanjem pritiskom Figure 2 shows the cover area corresponding to Figure 1 with a heating surface for pressure welding preparation

Crtež 3 isječak iz presjeka područja poklopca drugog izvedbenog oblika bačve s čepom, opremljene injekciono prešanim plastičnim zapornim prstenom i Drawing 3 is a cross-sectional view of the lid area of a second embodiment of a barrel with a cap, equipped with an injection-molded plastic sealing ring and

Crtež 4 isječak iz presjeka područja poklopca bačve prerađene iz bačve s čepom u bačvu sa širokim grlom s poklopcem, nakon odvajanja poklopca s čepom. Figure 4 is a cross-section of the lid area of a cask converted from a capped barrel to a wide-necked capped barrel, after the capped lid has been removed.

Bačva s čepom 1 od termoplastične plastične mase, npr. polietilena, prema crtežu 1, koja se koristi kao bačva za višekratnu uporabu, ima puhanjem oblikovano tijelo širokog grla 2 s grlom bačve 3 u kojem su na određenom razmaku od ruba otvora 4 iznad oboda raspoređena užljebljenja 5 za ukrutu grla bačve 3 i potporu injekciono prešanog plastičnog poklopca s čepom 6. Poklopac s čepom 6 ima vanjski rub 7 koji obuhvaća grlo bačve 3 i unutrašnji rub 8 koji uranja u grlo bačve 3, a ispupčen je iznad dna poklopca 10 koji leži ispod otvora bačve 9. Poklopac s čepom 6 uranja sa svojim dnom 10 toliko duboko u grlo bačve 3 da čep za punjenje i pražnjenje 11 i čep za zračenje i odzračivanje 12, oblikovani na dnu poklopca 10, završavaju ispod razine gornjeg ruba poklopca 13. Vanjski rub poklopca 7 i unutrašnji rub poklopca 8 tvore kružni prostor 14 s čijeg je dna aksijalno ispupčen prstenasti nastavak 15. Prstenasti nastavak 15 prevučen je dvokomponentnom brtvenom masom, npr. poliuretanom s otvrđivačem, koja tvori brtveni prsten 16. A barrel with a cap 1 made of thermoplastic plastic mass, e.g. polyethylene, according to drawing 1, which is used as a barrel for repeated use, has a blow-molded wide-mouthed body 2 with a barrel neck 3 in which, at a certain distance from the edge of the opening 4 above the rim, are arranged grooves 5 for stiffening the neck of the barrel 3 and supporting the injection-molded plastic cap with a cap 6. The cap with a cap 6 has an outer edge 7 that encompasses the neck of the barrel 3 and an inner edge 8 that dips into the neck of the barrel 3, and is raised above the bottom of the cap 10 that lies below the opening of the barrel 9. The cap with the cap 6 plunges with its bottom 10 so deeply into the neck of the barrel 3 that the filling and discharging plug 11 and the radiation and venting plug 12, formed on the bottom of the cap 10, end below the level of the upper edge of the cap 13. External the edge of the cover 7 and the inner edge of the cover 8 form a circular space 14, from the bottom of which an axially protruding ring extension 15 is coated. which forms a sealing ring 16.

Dolje na vanjskom rubu 7 injekciono prešanog plastičnog poklopca 6 s čepom oblikovana je kružna prirubnica 17, a na puhanjem oblikovanom tijelu bačve 2 masivna bordura 18 smještena na određenom razmaku ispod otvora bačve 9, radijalno ispupčena prema van. Down on the outer edge 7 of the injection-molded plastic cover 6 with a plug, a circular flange 17 is formed, and on the blow-molded body of the barrel 2, a massive border 18 located at a certain distance below the opening of the barrel 9, bulging radially outwards.

Prirubnica poklopca 17 i bordura bačve 18 koje pri zatvorenom poklopcu 6 tvore razmak a privarene su zajedno u prstenasti zaporni segment 20 koji se proteže koaksijalno u odnosu na os bačve 19-19. The lid flange 17 and barrel border 18, which form a gap when the lid 6 is closed, are welded together into an annular locking segment 20 that extends coaxially with respect to the axis of the barrel 19-19.

Za proizvodnju bačve s čepom 1 prema crtežu 1 se prema crtežu 2 na borduru 18 tijela bačve 2 odozgo s određenom tlačnom silom P postavlja grijaća površina 21, a na nju poklopac s čepom 6 s koaksijalnim prstenastim nastavkom 23 oblikovanim na donjoj strani 22 prirubnice poklopca 17 koji je koaksijalan u odnosu na os poklopca odn. bačve 19-19. U donjoj strani 24 grijaće površine 21 oblikovan je prstenasti utor 25. Za vrijeme perioda zagrijavanja utiče u prstenasti utor 25 grijaće površine 21 otopljeni plastični materijal bordure bačve 18 zbog pritiska koji se vrši na grijaću površinu 21, te tvori prstenasto ispupčenje 26 smješteno nasuprot prstenastom nastavku 23, a prstenasti nastavak 23 oblikovan na prirubnici poklopca 17 se zataljuje. Nakon perioda zagrijavanja podignu se s tijela bačve 2 poklopac s čepom 6 i grijaća površina 21, a nakon toga se poklopac 6 s prstenastim nastavkom 23 uz pritisak i prednapinjanje brtve poklopca 16 postave na borduru bačve 18, i to tako da se prstenasti nastavak 23 privari uz donju stranu 22 prirubnice poklopca 17 s prstenastim ispupčenjem 26 na gornjoj strani 27 bordure bačve 18 u prstenasti zaporni segment 20 koji povezuje prirubnicu poklopca 17 i borduru bačve 18. To produce a barrel with a cap 1 according to drawing 1, according to drawing 2, a heating surface 21 is placed on the border 18 of the body of the barrel 2 from above with a certain pressure force P, and on it a lid with a plug 6 with a coaxial ring extension 23 formed on the lower side 22 of the lid flange 17 which is coaxial with respect to the axis of the lid or barrels 19-19. An annular groove 25 is formed in the lower side 24 of the heating surface 21. During the heating period, the melted plastic material of the barrel border 18 enters the annular groove 25 of the heating surface 21 due to the pressure exerted on the heating surface 21, and forms an annular protrusion 26 located opposite the annular extension. 23, and the annular extension 23 formed on the flange of the cover 17 is sealed. After the heating period, the cover with plug 6 and the heating surface 21 are lifted from the body of the barrel 2, and after that, the cover 6 with the annular extension 23 is placed on the border of the barrel 18 with the pressure and pretensioning of the lid seal 16, and this in such a way that the annular extension 23 is welded along the lower side 22 of the lid flange 17 with the annular protrusion 26 on the upper side 27 of the barrel border 18 into the annular locking segment 20 connecting the lid flange 17 and the barrel border 18.

Izmjenom opisanog postupka proizvodnje može se prstenasto ispupčenje 26 upuhati na borduru bačve. By changing the described production process, the annular protrusion 26 can be blown onto the barrel border.

Postoji nadalje mogućnost da se prirubnica poklopca 17 i bordura bačve 18 međusobno zavare samo preko prstenastog nastavka 23. There is also the possibility that the flange of the cover 17 and the border of the barrel 18 are welded to each other only via the ring attachment 23.

Za proizvodnju bačve s čepom 28 prema crtežu 3 postavlja se na grlo bačve 3 poklopac s čepom 6 uz primjenu sile P i uz prednapinjanje brtve poklopca 16, a prirubnica poklopca 17 i bordura bačve 18, smještene jedna iznad druge na razmaku a se prevlače zapornim prstenom 29 od plastične mase koji tvori prstenasti zaporni segment (20). Plastični materijal za zaporni prsten 29 se najpovoljnije - tangecijalno uštrcava u odgovarajući alat za injekciono lijevanje. For the production of a barrel with a cap 28 according to drawing 3, a cap with a cap 6 is placed on the neck of the barrel 3 with the application of force P and with the pretensioning of the cap seal 16, and the flange of the cap 17 and the border of the barrel 18, located one above the other at a distance, are covered with a locking ring 29 from the plastic mass that forms the annular locking segment (20). The plastic material for the stop ring 29 is best - tangentially injected into the appropriate tool for injection molding.

Nakon jednokratne ili višekratne uporabe se za ponovno kondicioniranje bačava s čepom 1, 28 prema crtežima 1 i 3 poklopac s čepom 6 odvaja od tijela sa širokim grlom 2 tako što se izvadi prstenasti zaporni segment 20 pomoću jednog ili više noževa 30 stroja za rezanje, pomoću rotirajućeg dlijeta, pile ili sličnog. Tijelo bačve 2 se može zatim pretvoriti u bačvu širokog grla 31 s jednostavnim poklopcem 32 i s priteznim zapornim prstenom 33 od lima prema crtežu 4 ili opremiti kao bačva s poklopcem s čepom ili kao bačva s čepom sa zavarenim ili štrcanim poklopcem. After one-time or multiple use, for reconditioning the barrel with the cap 1, 28 according to the drawings 1 and 3, the cover with the cap 6 is separated from the body with a wide mouth 2 by removing the annular locking segment 20 using one or more knives 30 of the cutting machine, using rotary chisel, saw or similar. The cask body 2 can then be converted into a wide neck cask 31 with a plain lid 32 and a sheet metal tension stop ring 33 as shown in drawing 4, or fitted as a capped cask or a capped cask with a welded or injected cap.

Bačve s čepom 1, 28 prema crtežima 1 i 3 te bačva sa širokim grlom i poklopcem 31 prema crtežu 4 mogu se opremiti i vrećom od plastične folije 34 koja se naziva inliner ili vrećom od kombinirane folije od metala i plastike. Ova plastična vreća 31 kod bačve s čepom 1 prikazana na crtežu 1 se prije zavarivanja odn. štrcanja poklopca s čepom 6 i prije postavljanja poklopca za bačvu sa širokim grlom 32 postavlja na grlo bačve 3 u tijelo bačve 2 i povlači preko ruba otvora 4, tako da se ukliješti između ovog i brtve poklopca 16. Dodatno se plastična vreća 34 može na unutrašnju stjenku tijela bačve 2 pričvrstiti na neka mjesta pomoću ljepila ili termozavarivanjem. Barrels with a cap 1, 28 according to drawings 1 and 3 and a barrel with a wide neck and lid 31 according to drawing 4 can be equipped with a bag made of plastic foil 34, which is called an inliner or a bag made of a combined foil made of metal and plastic. This plastic bag 31 at the barrel with the cap 1 shown in drawing 1 is before welding or injection of the lid with the plug 6 and before installing the lid for the barrel with a wide mouth 32 is placed on the neck of the barrel 3 in the body of the barrel 2 and pulled over the edge of the opening 4, so that it is pinched between this and the seal of the lid 16. In addition, the plastic bag 34 can be placed on the inner fasten the wall of the barrel body 2 in some places using glue or heat welding.

I konačno, poklopac s čepom 6 bačava s čepom 1, 28 prema crtežima 1 i 3 kao i poklopac 32 bačve širokog grla 31 prema slici 4 mogu se opremiti unutrašnjom oblogom 35 od plastične folije ili kombinirane folije od metala i plastike, koja je prikazana pod brojem 35 kod bačve s čepom 1 na crtežu 1. And finally, the stoppered lid 6 of the stoppered barrels 1, 28 according to drawings 1 and 3 as well as the lid 32 of the wide-necked barrel 31 according to Figure 4 can be equipped with an inner lining 35 of plastic film or a combined film of metal and plastic, which is shown under number 35 at the barrel with cap 1 in drawing 1.

Claims

1. A reusable plastic barrel with a blow-molded barrel body having a massive radially outwardly bulging barrel wall border spaced below the barrel opening, then with an injection-molded plastic cap with an outer rim that encloses the barrel neck and with an inner edge that dips into the neck of the barrel protruding above the bottom of the cap below the opening of the barrel, and with a sealing ring placed between the outer edge of the cap and the inner edge of the cap, and which by means of the cap closure rests on the opening of the neck of the barrel, characterized by the fact that it is for the original use as a barrel with a plug (1, 28) equipped with a lid with a plug (6), which has a filling and emptying plug (11) and a radiation and venting plug (12), and a flange of the lid (17) and a border of the barrel (18) which when closed cover (6) form a gap (a), and are welded together into a locking segment (20) that extends coaxially with respect to the axis of the barrel (19-19), and that for further use it can be processed t if the annular stopper segment (20) is removed, thus converting it into a wide-neck barrel (31) with a simple lid (32) with a tension stopper ring (33) or with a lid with a removable stopper or again into a stoppered barrel ( 28) with a cover with a plug (6) welded to the body of the barrel (2) by means of a locking segment (20).

2. A barrel according to claim 1, characterized by the fact that this as a barrel with a cap (1, 28) and/or as a barrel with a wide neck (31) and a removable cover (32) can be equipped with a bag (34) made of plastic film or from a combined foil made of metal and plastic.

3. A barrel according to claim 1 and 2, characterized in that as a barrel with a cap (1, 28) it has a welded lid with a plug (6) with an annular locking segment (20) and/or as a barrel with a wide neck (31) it has a lid (32) which is removable has an inner lining (35) made of plastic foil or a combined foil made of metal and plastic.

4. The procedure for the production of barrels for multiple use according to claim 1 to 3, characterized by the fact that a heating surface (21) is placed on the border (18) of the body of the barrel (2) under pressure from above, and a cover with a plug (6) is placed on the heating surface (21) ) with an annular extension (23) formed on the lower side (22) of the flange of the cover (17) which is coaxial with respect to the axis of the cover, and by the fact that after the heating period the annular extension (23) located on the flange of the cover (17) is sealed and the lid (6) and the heating surface (21) are lifted from the surface of the barrel border (18), after which the lid (6) with the ring attachment (23) is placed on the barrel border (18) with pressure and pretension of the lid seal (16), and so that the annular extension (23) and the barrel border (18) form an annular locking segment (20) that connects the cover flange (17) and the barrel border (18).

5. The method according to claim 4, characterized by the fact that by means of the heating surface (21) placed under pressure on the barrel border (18), on the lower side (24) of which the annular groove (25) is located, on the upper side (27) of the barrel border (18) forms an annular protrusion (26) which, after moving the heating surface (21) with a sealed ring attachment (23) on the lower side of the flange of the cover (17) under pressure, is welded to the border of the barrel (18) of the installed cover with the cap (6) locking segment (20) between the cover flange (17) and the barrel border (18).

6. Process for the production of reusable barrels according to claim 1 to 3, characterized by the fact that a cover with a plug (6) is placed on the neck of the barrel (3) under pressure and with pretensioning of the cover seal (16), and the cover flange (17) and barrel border (18), located one above the other at a distance (a ), are covered with a locking ring (29) made of plastic mass that forms an annular locking segment (20) that connects the lid flange (17) and the barrel border (18).