ITBO20100751A1

ITBO20100751A1 - METHOD OF PACKAGING LIQUID DETERGENT DOSES IN A HYDRO-SOLUBLE CONTAINER IN A CUSHION SHAPED CLOSED ON 4 SIDES

Info

Publication number: ITBO20100751A1
Application number: IT000751A
Authority: IT
Inventors: Gino Rapparini
Original assignee: Ica Spa
Priority date: 2010-12-22
Filing date: 2010-12-22
Publication date: 2012-06-23

Description

Descrizione annessa alla domanda di brevetto per invenzione industriale avente per titolo “METODO PER CONFEZIONARE DOSI DI DETERSIVO LIQUIDO IN CONTENITORE IDROSOLUBILE A FORMA DI CUSCINO CHIUSO SU 4 LATI” Description attached to the patent application for industrial invention entitled "METHOD FOR PACKING DOSES OF LIQUID DETERGENT IN WATER-SOLUBLE CONTAINER IN THE SHAPE OF A CUSHION CLOSED ON 4 SIDES"

CAMPO DELLA TECNICA FIELD OF TECHNIQUE

La presente invenzione industriale si riferisce al settore tecnologico della costruzione di macchine confezionatrici di dosi di detersivo liquido in materiale idrosolubile. Come classificazione di riferimento si indica la classe intemazionale B65b. The present industrial invention relates to the technological sector of the construction of machines for packaging doses of liquid detergent in water-soluble material. As a reference classification, the international class B65b is indicated.

STATO DELLA TECNICA STATE OF THE TECHNIQUE

Nella tecnica anteriore sono note macchine a tamburo ad impronte radiali che, a ciclo continuo confezionano dosi di detersivo liquido avvolto in materiale idrosolubile. Allo stesso scopo sono note macchine orizzontali che a ciclo alternato trasportano piastre a più impronte, nelle quali vengono confezionate dosi di detersivo liquido avvolto in materiale idrosolubile. In the prior art, drum machines with radial impressions are known which, in a continuous cycle, package doses of liquid detergent wrapped in water-soluble material. For the same purpose, horizontal machines are known which, in alternating cycles, transport plates with several impressions, in which doses of liquid detergent wrapped in water-soluble material are packaged.

In entrambi i casi il procedimento per il confezionamento dei liquidi è il medesimo: il film idrosolubile, steso sul tamburo o sulle piastre, viene aspirato e fatto aderire all’interno dell’impronta, di seguito viene riempito con il liquido, ricoperto con altro film idrosolubile, saldato sui lati, e infine separato dal resto del film. In both cases, the procedure for packaging liquids is the same: the water-soluble film, spread on the drum or on the plates, is sucked and made to adhere inside the impression, then it is filled with the liquid, covered with another film water-soluble, sealed on the sides, and finally separated from the rest of the film.

Il rischio che durante le fasi di riempimento e di trasporto, il liquido non ancora completamente avvolto esca dall’impronta è evidente, con le conseguenze immaginabili. The risk that during the filling and transport phases, the liquid not yet completely wrapped comes out of the impression is evident, with imaginable consequences.

Come evidenti sono le difficoltà di accoppiamento dei due film provenienti da percorsi e sollecitazioni diverse. Le macchine quindi non possono altro che essere enormi, complesse, delicate e costose. As evident are the difficulties in coupling the two films coming from different paths and stresses. Machines therefore can only be huge, complex, delicate and expensive.

Il problema da risolvere è quello di realizzare macchine semplici, poco ingombranti, affidabili, veloci e di costo contenuto, che confezionano dosi di detersivo liquido in materiale idrosolubile senza incorrere nei rischi denunciati delle macchine note. The problem to be solved is that of making simple machines, not bulky, reliable, fast and of low cost, which package doses of liquid detergent in water-soluble material without incurring the risks reported by known machines.

DESCRIZIONE DESCRIPTION

Trattasi di macchina verticale che produce su una o più fila confezioni di detersivo liquido a forma di cuscino chiuso su quattro lati, in materiale idrosolubile. I due film in materiale idrosolubile che formeranno il cuscino, vengono contrapposti, piani e paralleli in verticale, pendenti verso il basso; tra essi è presente il tubo di alimentazione prodotto. Ad ogni passo verso il basso, i due film contrapposti vengono sottoposti alle operazioni di unione longitudinale e di fondo, generalmente per termosaldatura, formando un cuscino vuoto chiuso su tre lati. This is a vertical machine that produces on one or more rows packs of liquid detergent in the shape of a cushion closed on four sides, in water-soluble material. The two films in water-soluble material that will form the cushion are opposite each other, flat and parallel vertically, hanging downwards; between them there is the product feeding tube. At each downward step, the two opposite films are subjected to longitudinal and bottom joining operations, generally by heat sealing, forming an empty cushion closed on three sides.

Dal quarto lato, aperto verso l’alto, verrà iniettato attraverso il tubo di alimentazione prodotto detersivo liquido a pressione. Dispositivi di contrasto elastici, che si chiudono attorno al tubo di alimentazione prodotto prima dell’iniezione, impediscono al liquido di salire oltre il necessario costringendo il film a dilatarsi e ad assumere la tipica forma di cuscino pieno. Anche il quarto lato verrà chiuso con i due film contrapposti piatti, in quanto la deformazione del film avviene solo sotto i contrasti elastici e non sopra dove avverrà la saldatura. Coltelli separatori separano il cuscino pieno dal resto del film. From the fourth side, open upwards, the liquid detergent product will be injected under pressure through the feed pipe. Elastic contrast devices, which close around the product supply tube before injection, prevent the liquid from rising beyond the necessary amount, forcing the film to expand and take on the typical shape of a full cushion. The fourth side will also be closed with the two flat opposite films, as the deformation of the film occurs only under the elastic contrasts and not above where the sealing will take place. Separating knives separate the filled cushion from the rest of the film.

Da quanto descritto, si evince che si tratta di una macchina semplice da condurre, poco ingombrante, affidabile e dai costi contenuti. In essa gli arresti e le ripartenze non hanno nessuna influenza sulla stabilità del liquido perché iniettato a pressione dentro un cuscino già formato che assumerà quella tipica forma di “cuscino gonfio” da dove il liquido non potrà più uscire se non con lo scioglimento delle pareti che lo contengono. From what has been described, it is clear that it is a simple machine to operate, not bulky, reliable and with low costs. In it, the stops and restarts have no influence on the stability of the liquid because it is injected under pressure into an already formed pillow that will take on that typical shape of a "swollen pillow" from where the liquid will no longer be able to escape except with the dissolution of the walls that contain it.

L’invenzione viene chiarita dalla seguente descrizione particolareggiata, con riferimento alle figure dei disegni allegati a titolo di esempio non limitativo. The invention is clarified by the following detailed description, with reference to the figures of the attached drawings by way of non-limiting example.

La figura 1 mostra due film piani (A) e (A’) in materiale idrosolubile, contrapposti in verticale. Figure 1 shows two flat films (A) and (A ') in water-soluble material, opposite each other vertically.

La figura 2 mostra i film (A) e (A’) tra i quali è inserito il tubo di alimentazione prodotto (B). Figure 2 shows the films (A) and (A ') between which the product feeding tube (B) is inserted.

La figura 3 mostra i film (A) e (A’) con all’interno il tubo di alimentazione prodotto (B), ai lati del quale barre saldanti contrapposte verticali (C)-(C’) e (D)-(D’) agiscono sui bordi longitudinali dei film (A) e (A’). Figure 3 shows the films (A) and (A ') with the product feeding tube (B) inside, on the sides of which opposing vertical sealing bars (C) - (C') and (D) - (D ') act on the longitudinal edges of the films (A) and (A').

La figura 4 mostra che le barre saldanti contrapposte verticali (C)-(C’) e (D)-(D’) sono aperte; si nota che i bordi longitudinali (E) ed (E’) dei film (A) e (A’) sono ermeticamente uniti per termosaldatura. Si nota inoltre che i film (A) e (A’) sono avanzati di un passo e che sono presenti due barre saldanti contrapposte di chiusura orizzontale (F)-(F’) aperte. Figure 4 shows that the opposite vertical sealing bars (C) - (C ') and (D) - (D') are open; it is noted that the longitudinal edges (E) and (E ') of the films (A) and (A') are hermetically joined by heat sealing. It is also noted that films (A) and (A ') are advanced by one step and that there are two opposing sealing bars for horizontal closure (F) - (F') open.

La figura 5 mostra che le barre saldanti contrapposte verticali (C)-(C’) e (D)-(D’) e le barre saldanti contrapposte di chiusura orizzontale (F)-(F’) sono chiuse. Figure 5 shows that the opposing vertical sealing bars (C) - (C ') and (D) - (D') and the opposing horizontal closing sealing bars (F) - (F ') are closed.

La figura 6 mostra che le barre saldanti contrapposte verticali (C)-(C’) e (D)-(D’) e le barre saldanti contrapposte di chiusura orizzontale (F)-(F’) sono aperte e che è avvenuto il prolungamento della saldatura dei bordi longitudinali (E)-(E’) e la saldatura orizzontale del fondo (G), formando il cuscino vuoto (H). Si nota che i film (A) e (A’) sono sempre piani e aH’intemo è presente il tubo di alimentazione prodotto (B). Figure 6 shows that the opposite vertical sealing bars (C) - (C ') and (D) - (D') and the opposite horizontal closing sealing bars (F) - (F ') are open and that the extension of the welding of the longitudinal edges (E) - (E ') and the horizontal welding of the bottom (G), forming the hollow cushion (H). It is noted that the films (A) and (A ') are always flat and inside there is the product feeding tube (B).

La figura 7 mostra i coltelli separatori contrapposti (N)-(N’) che separano il primo cuscino vuoto (X), non chiuso sul fondo, dal resto del film (condizione che si verifica solo ad inizio produzione). Si notano le due semiconchiglie contrapposte (I)-(I’), con impronta centrale (L)-(L’) contornata dai piani elastici (M)-(M’). Si nota ancora che sulla parete esterna sono presenti i tubi (Q)-(Q’) che portano l’aria calda aH’intemo della conchiglia (I)-(I’) e che le barre saldanti contrapposte di chiusura orizzontale (F)-(F’) sono poste immediatamente sopra le semiconchiglie (I)-(I’), ma in posizione arretrata. Figure 7 shows the opposing separator knives (N) - (N ') that separate the first empty cushion (X), not closed on the bottom, from the rest of the film (a condition that occurs only at the start of production). Note the two opposing half shells (I) - (I '), with a central imprint (L) - (L') surrounded by elastic planes (M) - (M '). It is also noted that on the external wall there are the pipes (Q) - (Q ') which carry the hot air inside the shell (I) - (I') and that the opposite sealing bars for horizontal closure (F) - (F ') are placed immediately above the half shells (I) - (I'), but in a rearward position.

La. figura 8 mostra che le semiconchiglie (I)-(I’) sono chiuse; i piani elastici (M)-(M’) sono chiusi sul fondo e sui lati del cuscino vuoto, mentre sulla testa avvolgono i due film (A)-(A’) attorno al tubo di alimentazione prodotto (B) in una tenuta ermetica. Figure 8 shows that the half shells (I) - (I ') are closed; the elastic surfaces (M) - (M ') are closed on the bottom and sides of the empty cushion, while on the head they wrap the two films (A) - (A') around the product feed tube (B) in a hermetic seal .

La figura 8 bis mostra in sezione assiale la struttura interna della conchiglia ed il suo contenuto; si nota che i piani elastici (M)-(M’) sono chiusi sul fondo del cuscino piatto ed avvolgono sulla testa il tubo di alimentazione prodotto (B) pieno di liquido. Si nota ancora che all’interno del cuscino è presente aria (U) e che l’unica possibilità di accesso al suo interno è attraverso il tubo di alimentazione prodotto (B). Si nota inoltre che l’aria calda (P) entrata dai tubi (Q) e (Q’) avvolge tutta la parete esterna del cuscino. Figure 8 bis shows in axial section the internal structure of the shell and its contents; it is noted that the elastic surfaces (M) - (M ') are closed on the bottom of the flat cushion and wrap the product feeding tube (B) full of liquid on the head. It is also noted that inside the cushion there is air (U) and that the only possibility of accessing it is through the product feeding tube (B). It is also noted that the hot air (P) entering from the pipes (Q) and (Q ') envelops the entire outer wall of the pillow.

La figura 9 mostra che dal tubo di alimentazione prodotto (B) è entrato il detersivo liquido (R) a pressione che ha dilatato le pareti calde del cuscino (A)-(A’), facendole aderire all’impronta (L)-(L’). Si nota che l’aria (U) interna al cuscino pieno (FF) è diventata una bolla (Z) che ha isolato il detersivo liquido (R) dal tubo di alimentazione (B). Figure 9 shows that the pressurized liquid detergent (R) has entered from the product supply pipe (B), which has dilated the hot walls of the cushion (A) - (A '), making them adhere to the imprint (L) - ( L'). It is noted that the air (U) inside the full cushion (FF) has become a bubble (Z) which has isolated the liquid detergent (R) from the supply pipe (B).

La. figura 10 mostra che il tubo di alimentazione (B) è sfilato verso l’alto e che i piani elastici superiori (M)-(M’) della conchiglia ne hanno occupato lo spazio, impedendo al detersivo liquido (R) di salire. Si nota che i film (A)-(A’) sopra la conchiglia rimangono piatti. Figure 10 shows that the supply tube (B) is pulled out upwards and that the upper elastic surfaces (M) - (M ') of the shell have occupied the space, preventing the liquid detergent (R) from rising . It is noted that the films (A) - (A ') above the shell remain flat.

La figura 11 mostra in sezione assiale, quanto è avvenuto all’ interno della conchiglia con lo sfilarsi del tubo di alimentazione prodotto (B) oltre lo spazio destinato alla saldatura del quarto lato (S): si nota che i piani elastici (M)-(M’) hanno saturato lo spazio precedentemente occupato dal tubo di alimentazione prodotto (B) e che la bolla d’aria (Z) si è interposta tra il detersivo liquido (R) e i piani elastici (M)-(M’). Figure 11 shows in axial section what happened inside the shell with the extraction of the product feed tube (B) beyond the space intended for the welding of the fourth side (S): it is noted that the elastic surfaces (M) - (M ') have saturated the space previously occupied by the product feed tube (B) and that the air bubble (Z) has interposed between the liquid detergent (R) and the elastic surfaces (M) - (M').

La figura 12 mostra che le barre saldanti contrapposte di chiusura orizzontale (F)-(F’) si sono chiuse sopra la conchiglia (I)-(I’) ma sotto il tubo di alimentazione prodotto (B). La figura 12 bis mostra in sezione assiale la conchiglia (I)-(I’). Si nota all’intemo il cuscino pieno (H’) con la bolla d’aria (Z) e all’esterno barre saldanti contrapposte di chiusura orizzontale (F)-(F’) chiuse in fase di saldatura. Figure 12 shows that the opposite sealing bars of horizontal closure (F) - (F ') have closed above the shell (I) - (I') but under the product feed tube (B). Figure 12 bis shows the shell (I) - (I ') in axial section. Inside you can see the full cushion (H ') with the air bubble (Z) and on the outside opposing horizontal sealing bars (F) - (F') closed during the welding phase.

La figura 13 mostra in sezione assiale la conchiglia (I)-(I’) e le barre saldanti di chiusura orizzontale (F)-(F’) aperte. Si nota l’avvenuta saldatura del quarto lato (S) del cuscino pieno (H’). Si nota inoltre che la forma del cuscino pieno (Η') risulta leggermente allungata, in quanto si è liberato lo spazio occupato dai piani elastici superiori (M)-(M’) ed è sempre presente la bolla d’aria (Z). Figure 13 shows in axial section the shell (I) - (I ') and the horizontal sealing bars (F) - (F') open. Note the welding of the fourth side (S) of the full cushion (H '). It is also noted that the shape of the full cushion (Η ') is slightly elongated, as the space occupied by the upper elastic planes (M) - (M') has been freed and the air bubble (Z) is always present.

La figura 14 mostra che i film uniti (A)-(A’) sono avanzati di un passo, che le semiconchiglie (I)-(I’) sono aperte e che è stato formato un secondo cuscino pieno (H”). Si nota che i coltelli separatori contrapposti (N)-(N’), hanno separato il primo cuscino pieno (H’) dal secondo (H”). Figure 14 shows that the joined films (A) - (A ') have advanced one step, that the half shells (I) - (I') are open and that a second full cushion has been formed (H "). It is noted that the opposing separator knives (N) - (N '), separated the first full cushion (H') from the second (H ").

La figura 15 mostra in alternativa alle semiconchiglie (I)-(I’) due barre elastiche contrapposte (T)-(T’) che avvolgono i due film (A)-(A’) attorno al tubo di alimentazione prodotto (B) in una tenuta ermetica sulla testa del cuscino vuoto (Y). La. figura 16 mostra che è avvenuto il riempimento del cuscino (Y), divenuto (Y’), e che la sua forma dipende unicamente dall’ elasticità dei film (A)-(A’). Figure 15 shows as an alternative to the half shells (I) - (I ') two opposing elastic bars (T) - (T') that wrap the two films (A) - (A ') around the product feed tube (B) in a hermetic seal on the head of the empty pillow (Y). Figure 16 shows that the cushion (Y) has been filled, which has become (Y '), and that its shape depends solely on the elasticity of the films (A) - (A').

La figura 17 mostra che è possibile ottenere cuscini pieni (Y’)-(Y”), chiusi sui quattro lati, avendo al posto delle semiconchiglie (I)-(I’) due barre elastiche contrapposte (T)-(T). Si nota che in questo caso non si ha controllo sulla forma del cuscino, non essendo limitata la sua espansione durante il riempimento. Si nota ancora che senza controllo sull’espansione del cuscino (Y) sussiste un rischio di cedimento delle saldature o delle pareti. Figure 17 shows that it is possible to obtain full cushions (Y ') - (Y "), closed on all four sides, having in place of the half shells (I) - (I') two opposing elastic bars (T) - (T). It is noted that in this case there is no control over the shape of the cushion, as its expansion during filling is not limited. It is also noted that without checking the expansion of the cushion (Y) there is a risk of failure of the welds or walls.

Nelle varie figure ogni singolo particolare è così contrassegnato: In the various figures, every single detail is marked as follows:

(A)-(A’) sono i due film piani contrapposti in materiale idrosolubile (B) è il tubo di alimentazione prodotto (A) - (A ') are the two opposing flat films in water-soluble material (B) is the product feed tube

(C)-(C’) e (D)-(D’) sono barre saldanti contrapposte verticali (C) - (C ') and (D) - (D') are vertical opposing sealing bars

(E)-(E’) sono i bordi longitudinali del film ermeticamente uniti per termosaldatura (E) - (E ') are the longitudinal edges of the film hermetically joined by heat sealing

(F)-(F’) sono le barre saldanti contrapposte di chiusura orizzontale (F) - (F ') are the opposing sealing bars for horizontal closure

(G) è la saldatura orizzontale del fondo (G) is the horizontal bottom weld

(H) è il cuscino vuoto (H) is the empty pillow

(H’) è il primo cuscino pieno (H ’) is the first filled cushion

(H”) è il secondo cuscino pieno (H ”) is the second filled cushion

(Ι)-(Γ) sono le due semiconchiglie (Ι) - (Γ) are the two half shells

(L)-(L’) sono le impronte centrali della conchiglia con forma anche a soggetto (L) - (L ') are the central impressions of the shell with shape also subject

(M)-(M’) sono i piani elastici che contornano la conchiglia (M) - (M ') are the elastic surfaces that surround the shell

(N)-(N’) sono i coltelli separatori contrapposti (N) - (N ') are the opposing separator knives

(P) è l’aria calda che avvolge le pareti esterne del cuscino favorendone la dilatazione (P) is the hot air that envelops the outer walls of the pillow, favoring its expansion

(Q)-(Q’) sono i tubi di alimentazione dell’aria calda (P) (Q) - (Q ') are the hot air supply pipes (P)

(R) è il detersivo liquido (R) is liquid detergent

(S) è la saldatura orizzontale del quarto lato (S) is the horizontal weld of the fourth side

(T)-(T’) sono barre elastiche contrapposte (T) - (T ') are opposing elastic bars

(U) è l’aria all’ interno del cuscino (U) is the air inside the cushion

(Z) è la bolla d’aria all’interno del cuscino (Z) is the air bubble inside the cushion

(X) è il primo cuscino incompleto scartato (X) is the first incomplete pillow discarded

(Y) è il cuscino vuoto deformato ottenuto avendo al posto delle semiconchiglie due barre elastiche contrapposte (Y) is the deformed hollow cushion obtained by having two opposing elastic bars in place of the half shells

cn è il primo cuscino pieno deformato ottenuto avendo al posto delle semiconchiglie due barre elastiche contrapposte cn is the first deformed solid cushion obtained by having two opposing elastic bars in place of the half shells

(Y”) è il secondo cuscino pieno deformato ottenuto avendo al posto delle semiconchiglie due barre elastiche contrapposte (Y ”) is the second deformed solid cushion obtained by having two opposing elastic bars in place of the half shells

L’evidenza delle figure e la loro sintesi descrittiva mettono in luce le caratteristiche originali e proprie del presente trovato. È da sottolineare la ovvia circostanza che il dimensionamento e il proporzionamento strutturale dei vari equipaggi operativi potrà essere adattato alle esigenze del mercato in evoluzione. Resta inteso che i due film piani contrapposti in verticale, con all’interno il tubo di alimentazione prodotto, possono essere contrapposti anche in orizzontale e, mantenendo costante ed in sequenza i vari equipaggi operativi, ottenere il medesimo risultato finale. The evidence of the figures and their descriptive summary highlight the original and proper characteristics of the present invention. It should be emphasized the obvious circumstance that the sizing and structural proportioning of the various operating crews can be adapted to the needs of the evolving market. It is understood that the two vertically opposed flat films, with the product feed tube inside, can also be opposed horizontally and, keeping the various operating crews constant and in sequence, obtain the same final result.

Ora che ne sono state qui svelate nelle figure e nella descrizione tutte le peculiarità specifiche, ogni tecnico medio esperto nei rispettivi settori tecnologici sarà in grado di realizzare senza sforzo inventivo ma con semplici deduzione logiche, macchine confezionatrici di dosi di detersivo liquido, partendo da film piani contrapposti di materiale idrosolubile come sostanzialmente descritto, illustrato ed in seguito rivendicato. Now that all the specific peculiarities have been revealed here in the figures and in the description, every average technician expert in their respective technological sectors will be able to create, without inventive effort but with simple logical deductions, packaging machines for liquid detergent doses, starting from film opposing planes of water-soluble material as substantially described, illustrated and claimed hereinafter.

Claims

CLAIMS 1. METHOD FOR PACKAGING DOSES OF LIQUID DETERGENT IN WATER-SOLUBLE CONTAINER IN THE SHAPE OF A CUSHION CLOSED ON FOUR SIDES characterized by the fact that two opposing flat films in water-soluble material are vertical hanging downwards.

2. METHOD FOR PACKAGING DOSES OF LIQUID DETERGENT IN WATER-SOLUBLE CONTAINER IN THE SHAPE OF A CUSHION CLOSED ON FOUR SIDES, as in the previous claim, characterized in that the product feed tube is present between the two opposite flat films.

3. METHOD FOR PACKING DOSES OF LIQUID DETERGENT IN WATER-SOLUBLE CONTAINER IN THE SHAPE OF A CUSHION CLOSED ON FOUR SIDES, as in the previous claims, characterized by the fact that the two films are joined by heat sealing on the longitudinal sides and on the bottom by opposing sealing bars forming a cushion flat vacuum, open on the upper side from which the product feed tube enters.

4. METHOD FOR PACKAGING DOSES OF LIQUID DETERGENT IN WATER-SOLUBLE CONTAINER IN THE SHAPE OF A CUSHION CLOSED ON FOUR SIDES, as in the previous claims, characterized by the fact that a shell, in two parts with shape and internal dimensions equal to that of the full cushion, closes around to the empty pillow blocking it with elastic surfaces on the welded sides, and wrapping the film on the non-welded side to the product feed tube, always with elastic surfaces, forming a chamber inside the cushion with access only through the product feed tube.

5. METHOD FOR PACKAGING DOSES OF LIQUID DETERGENT IN WATER-SOLUBLE CONTAINER IN THE SHAPE OF A CUSHION CLOSED ON FOUR SIDES, as in the previous claims, characterized by the fact that, by injecting liquid under pressure through the product feed tube, we reach the empty cushion bound to the surfaces of the shell , since the water-soluble material can be dilated, it swells until it assumes the internal shape of the shell.

6. METHOD FOR PACKAGING DOSES OF LIQUID DETERGENT IN WATER-SOLUBLE CONTAINER IN THE SHAPE OF A CUSHION CLOSED ON FOUR SIDES, as per the previous claims, characterized in that it is the liquid that is injected under pressure through the feeding tube produced in the inside.

7. METHOD FOR PACKAGING DOSES OF LIQUID DETERGENT IN WATER-SOLUBLE CONTAINER IN THE SHAPE OF A CUSHION CLOSED ON FOUR SIDES, as in the previous claims, characterized by the fact that to facilitate the expansion of the water-soluble film and make it permanent, hot air is blown inside the shell, which envelops the body of the pillow wall.

8. METHOD FOR PACKAGING DOSES OF LIQUID DETERGENT IN WATER-SOLUBLE CONTAINER IN THE SHAPE OF A CUSHION CLOSED ON FOUR SIDES, as per the previous claims, characterized by the fact that, once the injection is completed and the shell is still closed, the product feeding tube, contrasted by the elastic planes, it is extracted from the inside of the cushion taking it beyond the horizontal opposing sealing bars above the shell, and the space it occupied is saturated by the film that wrapped it, pushed by the elastic surfaces, preventing the liquid from rising.

9. METHOD FOR PACKING DOSES OF LIQUID DETERGENT IN WATER-SOLUBLE CONTAINER IN THE SHAPE OF A CUSHION CLOSED ON FOUR SIDES, as per the previous claims, characterized by the fact that, once the injection is completed and the feeding tube is removed and the shell is still closed, the horizontal opposing sealing bars they close by obtaining by heat sealing the closure of the head of the cushion being formed and the bottom of the next one.

10. METHOD FOR PACKAGING DOSES OF LIQUID DETERGENT IN WATER-SOLUBLE CONTAINER IN THE SHAPE OF A CUSHION CLOSED ON FOUR SIDES, as in the preceding claims, characterized in that opposing separating knives separate the filled cushion from the rest of the film.

11. METHOD FOR PACKING DOSES OF LIQUID DETERGENT IN WATER-SOLUBLE CONTAINER IN THE SHAPE OF A CUSHION CLOSED ON FOUR SIDES, as in the previous claims, characterized by the fact that the two films can be opposed both vertically and horizontally and the operations listed in sequence can take place both vertically and horizontally, obtaining the same final result.

12. METHOD FOR PACKAGING DOSES OF LIQUID DETERGENT IN WATER-SOLUBLE CONTAINER IN THE SHAPE OF A CUSHION CLOSED ON FOUR SIDES, as in the preceding claims, characterized in that the liquid detergent can be replaced with another liquid or pasty product, as long as it does not dissolve the water-soluble film.

13. METHOD FOR PACKAGING DOSES OF LIQUID DETERGENT IN WATER-SOLUBLE CONTAINER IN THE SHAPE OF A CUSHION CLOSED ON FOUR SIDES, as in the preceding claims, characterized in that the two films forming the cushion can have different thicknesses and solubles.

14. METHOD FOR PACKAGING DOSES OF LIQUID DETERGENT IN WATER-SOLUBLE CONTAINER IN THE SHAPE OF A CUSHION CLOSED ON FOUR SIDES, as in the previous claims, characterized by the fact that the union of the two films, as well as by heat sealing, can take place by wetting the walls that come into contact with each other , by laser beam, ultrasound or other technologies suitable for stably coupling the water-soluble material.

15. METHOD FOR PACKAGING DOSES OF LIQUID DETERGENT IN A WATER-SOLUBLE CONTAINER IN THE SHAPE OF A CUSHION CLOSED ON FOUR SIDES, as per the previous claims, characterized by the fact that by replacing the shell with two opposing elastic bars, which by closing wrap the film around the feed tube, by isolating the inside of the pillow from the outside, the pillow, filled with liquid under pressure, assumes the shape that allows it to be more or less uniform than the film, not being opposed by the shell wall.

16. METHOD FOR PACKAGING DOSES OF LIQUID DETERGENT IN WATER-SOLUBLE CONTAINER IN THE SHAPE OF A CUSHION CLOSED ON FOUR SIDES, as in the preceding claims, characterized in that the pillow-shaped packages can be formed simultaneously in several rows side by side.

17. METHOD FOR PACKAGING DOSES OF LIQUID DETERGENT IN WATER-SOLUBLE CONTAINER IN THE SHAPE OF A CUSHION CLOSED ON FOUR SIDES, as per the preceding claims, characterized by the fact that to pull the film step by step, it is the displacement of the shell when it is still closed and the film stuck between the his plans.

18. METHOD FOR PACKAGING DOSES OF LIQUID DETERGENT IN WATER-SOLUBLE CONTAINER IN THE SHAPE OF A CUSHION CLOSED ON FOUR SIDES, as in the previous claims, characterized by the fact that when the elastic surfaces open, the volume inside the cushion increases with the consequent decrease in the pressure of the liquid on the walls and welds.

19. METHOD FOR PACKING DOSES OF LIQUID DETERGENT IN WATER-SOLUBLE CONTAINER IN THE SHAPE OF A CUSHION CLOSED ON FOUR SIDES, as per the previous claims, characterized by the fact that at the end of the injection produced inside the cushion, the air bubble moves between the liquid and the feeding tube isolating it from the liquid.

20. METHOD FOR PACKING DOSES OF LIQUID DETERGENT IN WATER-SOLUBLE CONTAINER IN THE SHAPE OF A CUSHION CLOSED ON FOUR SIDES, as in the previous claims, characterized by the fact that external contrasts to the two water-soluble films, during the formation of the empty cushion, regulate the quantity that remains inside of the future full pillow.

21. METHOD FOR PACKING DOSES OF LIQUID DETERGENT IN WATER-SOLUBLE CONTAINER IN THE SHAPE OF A CUSHION CLOSED ON FOUR SIDES, as in the previous claims, characterized by the fact that the packages can have different shapes from the four-seal cushion and take on a polyhedral or round, oval or subject.