ITBO20090476A1 - DEVICE TO OPTIMIZE THERMAL WELDING OPERATIONS OF PLASTIC SPARE PARTS IN MOTOR VEHICLE BODIES - Google Patents

DEVICE TO OPTIMIZE THERMAL WELDING OPERATIONS OF PLASTIC SPARE PARTS IN MOTOR VEHICLE BODIES Download PDF

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Publication number
ITBO20090476A1
ITBO20090476A1 IT000476A ITBO20090476A ITBO20090476A1 IT BO20090476 A1 ITBO20090476 A1 IT BO20090476A1 IT 000476 A IT000476 A IT 000476A IT BO20090476 A ITBO20090476 A IT BO20090476A IT BO20090476 A1 ITBO20090476 A1 IT BO20090476A1
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IT
Italy
Prior art keywords
fact
burner
motor vehicle
spare parts
vehicle bodies
Prior art date
Application number
IT000476A
Other languages
Italian (it)
Inventor
Emilio Bussolari
Original Assignee
Mb Autoattrezzature Srl
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 Mb Autoattrezzature Srl filed Critical Mb Autoattrezzature Srl
Priority to IT000476A priority Critical patent/ITBO20090476A1/en
Publication of ITBO20090476A1 publication Critical patent/ITBO20090476A1/en

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Classifications

    • 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B29C65/24—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools characterised by the means for heating the tool
    • B29C65/28—Flame or combustible material
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/84—Specific machine types or machines suitable for specific applications
    • B29C66/861—Hand-held tools
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/914—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
    • B29C66/9141—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature
    • B29C66/91421—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature of the joining tools
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/914—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
    • B29C66/9161—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the heat or the thermal flux, i.e. the heat flux
    • 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
    • B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
    • B29L2031/3044—Bumpers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
    • B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects

Description

DESCRIZIONE annessa alla domanda di brevetto per invenzione industriale avente per titolo “ DISPOSITIVO PER OTTIMIZZARE LE OPERAZIONI DI TERMOSALDATURA DI RICAMBI IN PLASTICA NELLE CARROZZERIE DI AUTOVEICOLI” DESCRIPTION attached to the patent application for industrial invention entitled "DEVICE FOR OPTIMIZING THE HEAT-SEALING OPERATIONS OF PLASTIC SPARE PARTS IN THE BODYWORKS OF MOTOR VEHICLES"

CAMPO DELLA TECNICA FIELD OF TECHNIQUE

Il presente trovato concerne la tecnica costruttiva dei dispositivi comprendenti bombolette di fluidi infiammabili combinate con congegni piezoelettrici per la loro accensione istantanea . The present invention relates to the construction technique of devices comprising cans of flammable fluids combined with piezoelectric devices for their instantaneous ignition.

Come classificazione di riferimento internazionale si indica la Classe Internazionale F 23 Q. The International Class F 23 Q is indicated as an international reference classification.

STATO DELLA TECNICA STATE OF THE TECHNIQUE

Nella letteratura brevettuale anteriore sono presenti i seguenti documenti: US 4 881 894 del 21 Novembre 1989; The following documents are present in the prior patent literature: US 4 881 894 of November 21, 1989;

US 2004/ 0166454 26 Agosto 2004 ( WO 2004 /0762821 ). US 2004/0166454 August 26, 2004 (WO 2004/0762821).

In particolare nel documento US 4 881 894 sono commentati i sottoelencati brevetti Statunitensi : In particular, the following US patents are commented on in document US 4 881 894:

US 3 655 324; US 3 802 828; US 4 325 828 ; US 4 348 172; US 4 526 532 ; US 4 666 499. US 3 655 324; US 3 802 828; US 4 325 828; US 4 348 172; US 4 526 532; US 4 666 499.

Il problema da risolvere è quello di equipaggiare gli apparecchi noti con l’applicazione di un dispositivo ausiliario che consenta di ottimizzare le operazioni di termosaldatura di ricambi in plastica della carrozzeria di autoveicoli particolarmente per griglie, alette e piccoli spoiler di dotazione in quasi tutti i paraurti di plastica i quali vengono forniti non assemblati e debbono quindi essere applicati sul posto dall’artigiano riparatore. The problem to be solved is that of equipping the known devices with the application of an auxiliary device that allows to optimize the operations of heat sealing of plastic spare parts of the vehicle body, particularly for grilles, fins and small spoilers supplied in almost all the bumpers. of plastic which are supplied unassembled and must therefore be applied on site by the repairman.

Attualmente l’operazione di termosaldatura viene eseguita empiricamente con l’impiego di un corpo metallico riscaldato. Currently, the heat sealing operation is performed empirically with the use of a heated metal body.

D E S C R I Z I O N E DESCRIPTION

Il trovato viene ora dettagliatamente chiarito dalla seguente descrizione particolareggiata con riferimento alle figure dei disegni allegati a titolo di esempio non limitativo. The invention is now clarified in detail by the following detailed description with reference to the figures of the attached drawings by way of non-limiting example.

La figura 1 illustra in vista laterale il dispositivo ottimizzatore costituito essenzialmente dal blocchetto prismatico 1 che viene fissato sul becco del bruciatore mediante la vite di bloccaggio superiore 2. Figure 1 shows a side view of the optimizing device essentially consisting of the prismatic block 1 which is fixed on the burner spout by means of the upper locking screw 2.

Nella figura 1 si nota inoltre sul blocchetto prismatico 1 la presenza di una seconda vite laterale 3 che serve per regolare il posizionamento longitudinale su detto blocchetto prismatico 1 del regolo scorrevole 4 munito di apposita piastra di estremità 5 che sarà riscaldata dalla fiammella del bruciatore 6 alimentato dalla bomboletta 7 contenente fluido infiammabile ad accensione piezoelettrica istantanea comandata dal pulsante 10 ( come illustrato nella successiva figura 3). Figure 1 also shows on the prismatic block 1 the presence of a second lateral screw 3 which serves to adjust the longitudinal positioning on said prismatic block 1 of the sliding ruler 4 equipped with a special end plate 5 which will be heated by the flame of the burner 6 supplied from the bottle 7 containing flammable fluid with instant piezoelectric ignition controlled by the button 10 (as illustrated in the following figure 3).

Detta piastra riscaldata 5 serve appunto per ottimizzare le operazioni di termosaldatura di particolari di plastica in dotazione al paraurti di ricambio. La figura 2 illustra una vista posteriore del blocchetto prismatico 1 . Said heated plate 5 serves precisely to optimize the heat sealing operations of plastic parts supplied with the replacement bumper. Figure 2 illustrates a rear view of the prismatic block 1.

Si nota la presenza della cavità ovoidale 8 , della vite superiore 2 , della vite laterale 3 e del regolo 4 scorrevole nel foro longitudinale 13. The presence of the ovoid cavity 8, of the upper screw 2, of the lateral screw 3 and of the ruler 4 sliding in the longitudinal hole 13 is noted.

La figura 3 illustra l’applicazione del blocchetto prismatico 1 sul beccuccio ovoidale 9 del bruciatore di una bomboletta di gas infiammabile tramite un congegno piezoelettrico 10. Figure 3 illustrates the application of the prismatic block 1 on the ovoid spout 9 of the burner of a can of flammable gas using a piezoelectric device 10.

Nella figura 3 si nota la presenza del pulsante piezoelettrico 10 e la presenza dell’ interruttore 12 che spegne la fiammella accesa dal piezoelettrico 10. In tutte le figure ogni singolo particolare è contraddistinto con la numerazione seguente. In figure 3 we note the presence of the piezoelectric button 10 and the presence of the switch 12 which extinguishes the flame lit by the piezoelectric 10. In all the figures, every single detail is marked with the following numbering.

1 indica il blocchetto prismatico. 1 indicates the prismatic block.

2 indica la vite di bloccaggio superiore del blocchetto 1. 2 indicates the upper locking screw of block 1.

3 indica un seconda vite laterale per il fissaggio della posizione regolata del regolo scorrevole longitudinalmente in apposito cavità 8 del blocchetto 1 . 3 indicates a second lateral screw for fixing the adjusted position of the longitudinally sliding ruler in a special cavity 8 of block 1.

4 indica il regolo scorrevole per regolare la distanza dalla fiammella della piastra 5 da riscaldare che si trova all’estremità esterna di detto regolo 4. 5 indica la piastra da riscaldare per ottimizzare le operazioni di termosaldatura di particolari di plastica. 4 indicates the sliding ruler to adjust the distance from the flame of the plate 5 to be heated which is located at the outer end of said ruler 4. 5 indicates the plate to be heated to optimize the heat-sealing operations of plastic parts.

6 indica il beccuccio del bruciatore . 6 indicates the burner spout.

7 indica la bomboletta di gas infiammabile. 7 indicates the flammable gas canister.

8 indica la cavità ovoidale attraversante longitudinalmente il blocchetto prismatico 1 . 8 indicates the ovoid cavity longitudinally traversing the prismatic block 1.

9 indica il beccuccio del bruciatore congruente con la cavità 8 presente nel blocchetto prismatico 1. 9 indicates the burner spout congruent with the cavity 8 present in the prismatic block 1.

10 indica il pulsante che comanda il congegno piezoelettrico. 10 indicates the button that controls the piezoelectric device.

11 indica un congegno piezoelettrico attuato dal pulsante 10. 11 indicates a piezoelectric device actuated by the button 10.

12 indica un interruttore che spegne la fiammella del bruciatore. 12 indicates a switch which extinguishes the burner flame.

13 indica un foro passante longitudinalmente presente nel blocchetto prismatico 1 per consentire lo scorrimento del regolo 4 per registrare l’opportuno posizionamento della piastra riscaldata fissata tramite la vite laterale 3. 13 indicates a longitudinally through hole present in the prismatic block 1 to allow the sliding of the ruler 4 to record the appropriate positioning of the heated plate fixed by the lateral screw 3.

Il funzionamento del dispositivo ottimizzatore , oggetto della presente privativa industriale è estremamente semplice e pratico da realizzare . The operation of the optimizing device, which is the subject of this industrial patent, is extremely simple and practical to implement.

Tramite il pulsante 10 si provoca l’accensione simultanea del fluido uscente dalla bomboletta 7 ed il rapido riscaldamento della piastra 5. The button 10 causes the simultaneous ignition of the fluid coming out of the can 7 and the rapid heating of the plate 5.

L’operatore con una sola mano manipola la bomboletta e porta la piastra riscaldata 5 a contatto con la zona del particolare da saldare sul nuovo paraurti di ricambio. The operator with one hand manipulates the can and brings the heated plate 5 in contact with the area of the part to be welded on the new spare bumper.

Naturalmente la forma di realizzazione illustrata è suscettibile di diverse varianti di realizzazione pratica sia per quanto riguarda il dimensionamento ed il proporzionamento strutturale delle varie componenti che potranno corrispondere alle esigenze tecniche del mercato dei ricambi di paraurti in plastica o di altri particolari similari. The illustrated embodiment is of course susceptible of various practical embodiments both as regards the sizing and structural proportioning of the various components which may correspond to the technical requirements of the market for spare parts for plastic bumpers or other similar details.

Ogni tecnico medio esperto nei rispettivi settori tecnologici, venuto qui a conoscenza delle svelate combinazioni inventive del presente trovato, sarà in grado con semplici deduzioni logiche ed applicazioni tecnologiche ma senza sforzo inventivo , di realizzare dei dispositivi ottimizzatori delle operazioni di termosaldatura di particolari in plastica da termosaldare agevolmente ai paraurti di ricambio. Any average skilled technician in the respective technological sectors, who has come to know the inventive combinations of the present invention, will be able, with simple logical deductions and technological applications but without inventive effort, to realize optimizing devices for the heat-sealing operations of plastic parts to be easily heat-welded to replacement bumpers.

Rientreranno pertanto nella sfera di protezione del presente trovato quei dispositivi similari realizzati secondo gli insegnamenti deducibili dalla presente descrizione e dai relativi disegni esemplificativi come sostanzialmente illustrati descritti e rivendicati. Therefore, those similar devices made according to the teachings that can be deduced from the present description and from the related exemplary drawings as substantially illustrated, described and claimed, will therefore fall within the scope of protection of the present invention.

Si sottolinea la circostanza che il gradiente euristico della presente invenzione industriale , esaltando la trasparente semplicità concettuale del dispositivo descritto ne mette in luce essenzialmente la facilità di realizzazione e l’affidabilità di funzionamento pratico durante le operazioni di termosaldatura di particolari dettagli dei nuovi paraurti di ricambio o altri oggetti similari. Si mette anche in rilievo la circostanza che il dispositivo in oggetto consente una rapida regolazione della posizione della piastra da riscaldare rispetto alla lunghezza della fiammella simultaneamente accesa piezoelettricamente. It is emphasized that the heuristic gradient of the present industrial invention, enhancing the transparent conceptual simplicity of the described device, essentially highlights its ease of construction and the reliability of practical operation during the heat-sealing operations of particular details of the new replacement bumpers. or other similar objects. It is also pointed out that the device in question allows a rapid adjustment of the position of the plate to be heated with respect to the length of the flame which is simultaneously lit piezoelectrically.

Si precisa che la caratteristica manipolabilità delle bombolette contenenti fluidi infiammabili risulta descritta dettagliatamente nei documenti brevettuali indicati in premessa per stabilire lo stato dell’arte anteriore. It should be noted that the characteristic handling of cans containing flammable fluids is described in detail in the patent documents indicated in the introduction to establish the state of the prior art.

L’artigiano operatore con una mano manovra agevolmente la bomboletta e la relativa piastra riscaldata e con l’altra mano agisce sui particolari da termosaldare sul paraurti di ricambio. The craftsman operator with one maneuver easily maneuvers the can and its heated plate and with the other hand acts on the parts to be heat-sealed on the spare bumper.

Concludendo rientreranno nell’ambito di protezione della presente invenzione industriale quei dispositivi ausiliari applicabili alle bombolette presenti sul mercato che risulteranno possedere le caratteristiche originali proprie del presente trovato come sostanzialmente descritte, illustrate ed in seguito rivendicate . In conclusion, those auxiliary devices applicable to the cans on the market that will have the original characteristics of the present invention as substantially described, illustrated and claimed hereinafter, will fall within the scope of protection of the present industrial invention.

Claims (5)

RIVENDICAZIONI 1) Dispositivo per ottimizzare le operazioni di termosaldatura di ricambi in plastica nelle carrozzerie di autoveicoli, CARATTERIZZATO DAL FATTO di comprendere una piastrina metallica 5 riscaldabile tramite la fiammella di un microbruciatore 6 provvisto di bomboletta 7 ricaricabile con fluido infiammabile. CLAIMS 1) Device for optimizing the heat-sealing operations of plastic spare parts in motor vehicle bodies, CHARACTERIZED IN THE FACT that it comprises a metal plate 5 that can be heated by the flame of a micro-burner 6 equipped with a refillable can 7 with flammable fluid. 2) Dispositivo come alla rivendicazione 1) CARATTERIZZATO DAL FATTO CHE la posizione di fissaggio del regolo 4 solidale alla piastrina 5 è regolabile per ottimizzare la distanza predeterminata dalla fiammella del bruciatore 6 . 2) Device as in claim 1) CHARACTERIZED BY THE FACT THAT the fixing position of the ruler 4 integral with the plate 5 is adjustable to optimize the predetermined distance from the flame of the burner 6. 3) Dispositivo come alle rivendicazioni precedenti CARATTERIZZATO DAL FATTO CHE la piastrina riscaldata 5 ,dopo aver raggiunto la temperatura ottimale viene portata a contatto con le parti in plastica da termosaldare impugnando la bomboletta 7. 3) Device as per the preceding claims CHARACTERIZED BY THE FACT THAT the heated plate 5, after reaching the optimum temperature, is brought into contact with the plastic parts to be heat-sealed by gripping the can 7. 4) Dispositivo come rivendicato in precedenza CARATTERIZZATO DAL FATTO CHE il blocchetto prismatico 1 è provvisto di cavità a configurazione ovoidale 8 congruente con la configurazione esterna del beccuccio 9 del bruciatore 6. 4) Device as previously claimed CHARACTERIZED BY THE FACT THAT the prismatic block 1 is provided with an ovoid-shaped cavity 8 congruent with the external configuration of the spout 9 of the burner 6. 5) Dispositivo come alle precedenti rivendicazioni e presentante almeno una delle caratteristiche sopra precisate e realizzato per raggiungere gli scopi sostanzialmente descritti ed illustrati.5) Device according to the preceding claims and having at least one of the characteristics specified above and realized to achieve the objects substantially described and illustrated.
IT000476A 2009-07-23 2009-07-23 DEVICE TO OPTIMIZE THERMAL WELDING OPERATIONS OF PLASTIC SPARE PARTS IN MOTOR VEHICLE BODIES ITBO20090476A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
IT000476A ITBO20090476A1 (en) 2009-07-23 2009-07-23 DEVICE TO OPTIMIZE THERMAL WELDING OPERATIONS OF PLASTIC SPARE PARTS IN MOTOR VEHICLE BODIES

Applications Claiming Priority (1)

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IT000476A ITBO20090476A1 (en) 2009-07-23 2009-07-23 DEVICE TO OPTIMIZE THERMAL WELDING OPERATIONS OF PLASTIC SPARE PARTS IN MOTOR VEHICLE BODIES

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ITBO20090476A1 true ITBO20090476A1 (en) 2011-01-24

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB846955A (en) * 1956-11-14 1960-09-07 Svenska Metallverken Ab A method and means of joining articles of thermoplastic material
JPS5463292U (en) * 1977-10-13 1979-05-04
US4329197A (en) * 1980-07-21 1982-05-11 Robles Leon G Plastic bag sealer
SU1353649A1 (en) * 1986-04-09 1987-11-23 Институт Электросварки Им.Е.О.Патона Gas-heated heater
JPH028033A (en) * 1988-06-28 1990-01-11 Toshio Nakajima Sealing method for plural thermoplastic substances by fuel heat source small-sized heat sealer and fuel heat source
US5769100A (en) * 1995-03-31 1998-06-23 Alexander; Eugene D. Synthetic hair-like fuser apparatus
US6431239B1 (en) * 2000-10-26 2002-08-13 Robert E. Massey Gas heated seaming iron

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB846955A (en) * 1956-11-14 1960-09-07 Svenska Metallverken Ab A method and means of joining articles of thermoplastic material
JPS5463292U (en) * 1977-10-13 1979-05-04
US4329197A (en) * 1980-07-21 1982-05-11 Robles Leon G Plastic bag sealer
SU1353649A1 (en) * 1986-04-09 1987-11-23 Институт Электросварки Им.Е.О.Патона Gas-heated heater
JPH028033A (en) * 1988-06-28 1990-01-11 Toshio Nakajima Sealing method for plural thermoplastic substances by fuel heat source small-sized heat sealer and fuel heat source
US5769100A (en) * 1995-03-31 1998-06-23 Alexander; Eugene D. Synthetic hair-like fuser apparatus
US6431239B1 (en) * 2000-10-26 2002-08-13 Robert E. Massey Gas heated seaming iron

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