US3427932A - Apparatus for attaching container covers by adhesive means - Google Patents

Apparatus for attaching container covers by adhesive means Download PDF

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Publication number
US3427932A
US3427932A US568492A US3427932DA US3427932A US 3427932 A US3427932 A US 3427932A US 568492 A US568492 A US 568492A US 3427932D A US3427932D A US 3427932DA US 3427932 A US3427932 A US 3427932A
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United States
Prior art keywords
adhesive
flap
units
valve
applicator
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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.)
Expired - Lifetime
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US568492A
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English (en)
Inventor
Edward E Wagner
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Philip Morris USA Inc
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Philip Morris USA Inc
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/10—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using liquid only; using a fluid of which the nature is immaterial
    • F16F9/14—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect
    • F16F9/16—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts
    • F16F9/18—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts with a closed cylinder and a piston separating two or more working spaces therein
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G13/00—Resilient suspensions characterised by arrangement, location or type of vibration dampers
    • B60G13/001—Arrangements for attachment of dampers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B51/00—Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
    • B65B51/02—Applying adhesives or sealing liquids
    • B65B51/023—Applying adhesives or sealing liquids using applicator nozzles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/08—Machines, pumps, or pumping installations having flexible working members having tubular flexible members
    • F04B43/088—Machines, pumps, or pumping installations having flexible working members having tubular flexible members with two or more tubular flexible members in series
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F13/00—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs

Definitions

  • the present invention concerns an apparatus for intermittently applying adhesive to individual objects advanced seriatim in a defined path. It is particularly adapted for conditions where the objects move rapidly and in spaced relation and it is important that the periods of adhesive application be sharply controlled, that is the beginning and termination of each individual application is precisely controlled so that the adhesive fully covers the desired area but there is no smearing of adhesive outside the prescribed area.
  • the apparatus is advantageously employed in sealing a hinge flap of a covered container. More specifically in the complete system disclosed herein the container body member is prefilled with its normal contents such as a bundle of cigarettes and a separately formed cap member is applied, one of the members having a hinge flap to be secured to the other member.
  • the individual units thus preassembled are advanced seriatim past the adhesive applicator with the flap laterally extended away from the unit, a strip or band of adhesive is applied from a nozzle in the appropriate area and the unit continues in its advance past a means for holding down the flap for a period sufficient in time and under conditions for the adhesive to set adequaely.
  • the adhesive covers and is confined to the prescribed area.
  • the adhesive applicator in its specific form it embodies means or heating and supplying a hot melt type of adhesive which is adequately fluid and flowable for the purpose but sets quickly.
  • the applicator is provided with a nozzle and a pump for delivering adhesive to the nozzle, the pump being automatically controlled in timed relation with the advance of the units through the apparatus.
  • the pump and associated elements are so arranged that activation of the pump forces adhesive under pressure into a chamber in which is reciprocably mounted the nozzle control valve, the valve being normally urged to closed position by a spring means but quickly moved to valveopen position by the discharge of adhesive liquid from the pump, the connectioins being such that the liquid under pressure concurrently forces the valve open and directs the adhesive under pressure through the nozzle.
  • FIG. 1 is a view in elevation of the complete system but shown in part somewhat diagrammatically;
  • FIG. 2 is a view in perspective of one of the container units with the cover attached thereto but shown in partially opened condition;
  • FIG. 3 is a view in perspective of one: of the conveyor pusher elements employed at regularly spaced positions of the conveyor;
  • FIG. 4 is a detailed view in perspective of the cam means for triggering and controlling the operation of the adhesive applicator
  • FIGS. 5A to 5D are cross sectional views taken on the planes A-A to DD respectively of FIG. I;
  • FIG. 6 is a cross sectional view in elevation of the adhesive applicator.
  • FIG. 1 shows an apparatus and system comprising a representative embodiment of the principles of the invention.
  • the units operated on comprise containers such as cigarette packages having in finished form a cover permanently attached by a hinge to the body member, one such unit U being shown in perspective in FIG. 2.
  • FIG. 1 The showing in FIG. 1 is somewhat diagrammatic but in general it includes a closed chain conveyor 10 entrained around a pair of sprockets 11 and 12, one of which, for example sprocket 12 which is secured to its shaft 13, being positively driven by a suitable source of power and appropriate connections.
  • the chain conveyor operates in its upper run between" two spaced flat horizontal ways 14 and 15 as indicated for example in FIGS. 5A to 5D, the ways 14 and 15 being provided with guides 16 and 17 respectively adapted to engage the ends of the units U.
  • the conveyor chain is provided at equally spaced positions therealong with special pusher elements 20 on of which is shown in perspective in FIG. 3.
  • the details of the pusher elements may vary but in the present form it includes a pair of links 21 of inverted T-shape connected by a stepped diameter cross pin 22 on which is mounted the pusher element 23 which has a downwardly extending lug 24 through which pin 22 extends.
  • the element has a forward face 25 adapted to engage against the units U and a rear portion 26 adapted to ride on the normal chain rollers as indicated in FIG- URE 3.
  • the units are fed to the conveyor by any suitable means appropriate to the circumstances including the kind of unit, a delivery chute being indicated at 30 in FIG. 1 as representative of a supply source.
  • the units U are cigarette packages including a body mem- 'ber 31 and a cover member 32, the apparatus being especially well adapted to operate on units of this character in which the body member is comprised of deep drawn plastic material of the character disclosed in the patent to Wiley et al. No. 3,167,104 issued January 26, 1965.
  • the cover member 32 may likewise be of drawn plastic material.
  • One of the members 31 and 32 is provided with a hinge flap such as that shown at 33 formed integrally with the cover member 32.
  • the units are delivered to the conveyor 10 by any suitable means.
  • the cigarette packages may be delivered from an accumulated supply or they may come directly from a packaging machine in which the contents comprising a bundle of cigarettes have been preinserted and the cap member applied resulting in a unit such as that indicated in FIG. 5A.
  • the bundle of cigarettes will be contained in a foil wrapper.
  • various labels may have been applied in accordance with common practice.
  • the cover member 32 is formed with the flap member 33 extended at an angle such as that shown in FIG. 5A. In orther words being formed of plastic material and with the flap at an angle to the back wall it is inherently flexibly biased to that position.
  • FIG. 5A shows the initial condition of the unit on the conveyor in which the flap is extended at an angle to the container and is advanced through the guide 17 located at that end of the container.
  • the flap is engaged by a guide surface 40 on the end guide 17 which progressively moves the flap in the further opened direction to the position indicated.
  • the units then proceed past the adhesive applicator indicated in general at 41 which is provided with a nozzle 42 arranged to deposit a strip or band of adhesive at the point 43 (FIG.
  • the conditions may be selected such that the adhesive material is applied at an area 43 whereby a small amount will extend through onto the foil wrapper of the cigarette bundle and serve to assist in securing the bundle within the body member.
  • this is an auxiliary feature which may or may not be employed dependent upon the character of the unit and the circumstances.
  • the container progresses on to the position shown in section 5D where the end guide 17. or as indicated a supplementary guide 17a, engages the container and has a flap hold down section 46 for ironing down the flap and holding it in that postion for a period of time suflicient to set the adhesive which preferably is a hot melt adhesive as will be described shortly.
  • the conveyor means and the hold down section 46 may be of sufficient length to insure the holding of the flap for a time sufiicient to set the adhesive which, however, in the case of hot melt need be of rather short duration.
  • Other means may be employed for insuring that the flap is held down for a sufliciently long period as, for example, the units may be delivered to some auxiliary means for that purpose independent of the conveyor 10. If desired or found expedient in certain cases the hold down member may be cooled by auxiliary means.
  • the control means for the adhesive applicator may vary in details such as comprising a mechanical arrangement or a system employing a photoelectric cell responsive to the presence of a unit at a particular point.
  • the present apparatus embodies a particularly effective and accurate control and one which is readily adjustable to provide the precise control of the adhesive applicator desired. It consists essentially of a cam means 50 driven in exact timed relation with the conveyor by a suitable drive connection such as is indicated in FIG. 1 by means of a chain 51 connected to the shaft 13 of the sprocket 12, the drive 51 being connected to the shaft 52 on which is fixed the cam 50.
  • the cam means not only controls the intermittent initiation of the application of adhesive but also the termination and duration of the adhesive application at the nozzle 42.
  • the cam is made in two sections 53 and 54 each adjustably secured on shaft 52.
  • cam 53 is secured to the shaft 52 by a set screw 55 extending through the hub 53a integral with cam 53.
  • Cam 54 may be similarly secured to shaft 52 or, as shown, it may be adjustably secured to cam 53 by means of a clamping bolt 56 secured at its inner end to cam 54 and extending through an arcuate slot 57 in cam 53 and clamped therein.
  • Cam section 54 is pre-timed so that its lobe initiates the application of adhesive and the cam section 53 is set to a position such that its lobe determines the termination of the application cycle.
  • the cam means 50 actuates a microswitch 60 which includes a roller 61 mounted on the switch operating finger 62 the roller having a width sufficient to engage both sections 53 and 54 of the cam means.
  • the microswitch 60 is connected to a solenoid indicated in general at 63 which operates a valve 64.
  • the solenoid and valve means may be of standard construction and the details thereof are not of importance with respect to the present apparatus and invention.
  • the solenoid and microswitch are connected into a suitable electric circuit, the terminals of which are indicated at 65. Air under pressure is supplied to the valve 64 through pipe 66 in which may be located a suitable pressure regulator 67.
  • the details of the adhesive applicator unit 41 are shown in the cross sectional view of FIG. 6 and in general outline in FIG. 1.
  • the unit 41 is mounted on the machine by any suitable means as by insulated rods extending through holes 41a in the main casing.
  • the applicator includes a hopper 70 in which is maintained a supply of adhesive which in the present case comprises chunks or pellets of hot melt adhesive.
  • the unit is provided with suitable means for heating the hot melt and maintaining a supply of the adhesive in flowable form in the lower portion of the hopper as indicated at 71.
  • the heater means which may be of electrical resistance type, indicated generally at 72 (FIG. 1), is connected to an electrical supply source by the lines 73 (FIG. 1).
  • An automatic temperature control of conventional type is embodied which includes the thermistor probes indicated generally at 74 (FIG. 6). The details of the heater elements and the automatic control are not important to the present invention and may vary considerably in character.
  • the hot melt adhesive is heated to flowable form and feeds into chamber 75 through cylindrical screen 75a.
  • Chamber 75 is connected through the passage 76 to the valve chamber 77, this latter chamber also being provided with a cylindrical screen 78.
  • the valve member includes an upper portion 79 of enlarged diameter and a lower portion 80 of smaller diameter, the portion 79 presenting a shoulder constituting a differential piston arrangement. From the chamber 77 the adhesive is adapted to flow down along the stem 80 of the valve member through the annular space 81.
  • the lower end of valve stem 80 is provided with a ball portion 82 adapted to seat over and control the nozzle passage 83.
  • the valve member is normally urged in the downward closed position by a spring 84 engaged between the upper end of the differential piston portion 79 and a fixed portion of the unit.
  • the upper end of the chamber in which operates the piston 79 is vented back to the main adhesive chamber through the horizontal passage 85.
  • the upper end of the unit above the valve means embodies an air cylinder and piston arrangement which includes cylinder and the piston 91 operative therein, the piston 91 having connected thereto a plunger 92 which extends down in and operates in the chamber 75.
  • Suitable packing means are provided for the elements including the packing indicated at 93 for the plunger 92.
  • the container at this time is moved horizontally and when the cam roller 61 reaches the end of the cam lobes the microswitch 6.0 operates through the electrical connections to solenoid 63 to reverse the valve 64 which opens the line 100 to exhaust and directs high pressure air through the pipe 101 into the lower end of the cylinder 90 instantly lifting the plunger 92 whereupon the pressure is released from the lower end of differential piston 79 and the spring 84 quickly moves the ball valve portion 82 into its seat terminating the application of the adhesive.
  • Hot melt adhesives are a well known type characterized particularly as achieving a solid state and resulting strength by cooling as distinguished from an adhesive which achieves a solid state through for example evaporation of a solvent. It is readily converted by heat from the normal solid state into a flowable state and when freed from the heat source quickly assumes the solid state and bonding effect.
  • a wide range of materials can be employed as hot melt adhesives as, for example, natural and synthetic waxes and resins including mineral, vegetable and petroleum waxes; alkyde, terpene resins, heat-stable phenol-formaldehyde resins, and rosin and its derivatives.
  • the strength of these materials can be enhanced by blending them with higher weight polymers including ethyl cellulose, polyvinyl acetate and derivatives thereof, butyl methacrylates, polyethylene, polystyrene and styrene copolymers, and polyisobutylene.
  • the combination of the hot melt adhesive, the applicator illustrated in FIG. '6, and the associated controls result in a very effective and efiicient system for adhesively securing the hinged covers.
  • the system depicted has a high capacity capable of delivering containers at a rate considerably in excess of 100 units per minute. It is very dependable but, however, embodies the feature of automatically indicating any unit in which the hinge flap is not secured. This results from the fact that the hinge flap is originally formed at an angle to the back wall and in relaxed condition assumes that position, as indicated in FIG. A. Accordingly it is inherently flexibly biased to that position and if the bond is not secure after the unit passes through the hold down area indicated in FIG. 5D the flap will spring out to the original angle.
  • Apparatus for attaching a cover member to a body member, one of said members having a hinge flap, and said members being pro-assembled as container units respectively said apparatus comprising a conveyor system for advancing said units seriatim, means associated with said conveyor system in the path of said units for temporarily holding said flaps in a laterally extended position, nozzle adhesive application means in said path for applying a strip of adhesive across an area of each said unit in a position for sealing said flap to the other member, and means in said path for thereafter folding down said flap onto the said other member and enclosing the adhesive between said flap and said other member.
  • Apparatus in accordance with claim 1 in which the adhesive applicator embodies means for heating and applying a hot melt adhesive.
  • Apparatus in accordance with claim 3 provided with control means to cause the adhesive applicator to be operated to extrude intermittently and successively charges of adhesive through a nozzle each for a limited period appropriate to the temporary presence of a unit.
  • Apparatus in accordance with claim 1 which includes means for holding the folded down flap for a sufficient period to enable the adhesive to form a permanent set.
  • Apparatus for attaching covers having hinge flaps to body members of container units the corresponding cover and body member of each unit being preassembled said apparatus comprising a conveyor system for advancing said units seriatim, means associated with said conveyor system in the advancing path of said units for temporarily holding laterally extended the respective flaps, an adhesive applicator in said path for applying a strip of adhesive across an appropriate area of such unit as it advances with the flap so extended, means in said path for thereafter folding down said flap onto the unit over the adhesive area, and cam means operated in timed relation with the advance of said conveyor means, and connecting means therefrom to control the operation of said adhesive applicator whereby said applicator is operated intermittently and for a limited period in each case to apply an appropriate strip of adhesive to the respective units as they advance past the applicator.
  • said connecting means from said cam means embodies an electrical circuit including a switch operated intermittently by said cam means, and a power means for operating said adhesive applicator controlled from said electrical circuit to effect the said operation of the adhesive applicator.
  • the adhesive applicator comprises a unit embodying means for heating and delivering a hot melt adhesive.
  • An adhesive applicator comprising a reciprocating piston type pump, a source for supplying adhesive to said pump, means for intermittently operating said piston on a discharge stroke, an adhesive discharge nozzle, a valve chamber associated with said nozzle, a valve member controlling said outlet mounted for reciprocation in said chamber independently of said pump piston, said valve member having an enlarged rear piston portion and an outer reduced nozzle outlet controlling portion, spring means for urging said valve member forward to nozzle closed position, and fluid conduit means connecting said currently through the nozzle outlet.
  • An adhesive applicator in accordance with claim 10 in which the adhesive is of a hot melt type and the applicator has associated therewith a means for heating and supplying the hot melt to the pump.
  • An adhesive applicator comprising a casing having therein a supply reservoir for hot melt type adhesive
  • a pump power means adapted to operate intermittently said pump, said pump having a fiuid conduit connection to the liquid adhesive supply, an adhesive discharge nozzle, a valve chamber and a valve including a plunger portion operable in said chamber arranged to control liquid discharge from said nozzle, a liquid connection from said pump to said chamber, said valve plunger being provided with a differential piston operative in said chamber whereby the intermittent delivering of liquid under pressure from said pump operates on said plunger correspondingly to open intermittently said valve.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Coating Apparatus (AREA)
  • Closing Of Containers (AREA)
  • Package Closures (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Manufacturing Of Cigar And Cigarette Tobacco (AREA)
  • Wrapping Of Specific Fragile Articles (AREA)
US568492A 1966-07-28 1966-07-28 Apparatus for attaching container covers by adhesive means Expired - Lifetime US3427932A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US56849266A 1966-07-28 1966-07-28

Publications (1)

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US3427932A true US3427932A (en) 1969-02-18

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US568492A Expired - Lifetime US3427932A (en) 1966-07-28 1966-07-28 Apparatus for attaching container covers by adhesive means

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US (1) US3427932A (sv)
AT (1) AT295410B (sv)
BE (1) BE695805A (sv)
CH (1) CH464672A (sv)
DE (1) DE1561416C3 (sv)
DK (1) DK128343B (sv)
ES (1) ES338968A1 (sv)
FI (1) FI47854C (sv)
FR (1) FR1514567A (sv)
GB (1) GB1176733A (sv)
NL (1) NL6705044A (sv)
NO (1) NO123783B (sv)
SE (1) SE330122B (sv)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3511138A (en) * 1967-04-20 1970-05-12 Kliklok Corp Box erecting devices for reducing the effect of stringing out of adhesives
US3713952A (en) * 1969-10-24 1973-01-30 Fibreboard Corp Apparatus for heat sealing cartons
US3865017A (en) * 1974-01-02 1975-02-11 Faustel Inc Machine for making file folders
US3906893A (en) * 1972-07-12 1975-09-23 Imp Group Ltd Impregnation of a travelling web
WO1990000471A1 (de) * 1988-07-08 1990-01-25 Georg Krebs Verfahren und vorrichtung zum herstellen von klebenähten quer zur bewegungsrichtung einer bahn
US5183523A (en) * 1990-08-15 1993-02-02 Philip Morris Incorporated Apparatus for ultrasonically bonding endcaps to a container of dissimilar material
EP1219540A1 (en) * 2000-12-22 2002-07-03 G.D Societ Per Azioni Method, assembly and unit for gumming articles
EP3138785A1 (en) * 2015-09-02 2017-03-08 Sluis Cigar Machinery B.V. Wax applicator
CN113211801A (zh) * 2021-05-05 2021-08-06 深圳市瀚宏数码科技有限公司 一种音箱外壳蒙布加工用热熔装置

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3827603A (en) * 1972-06-01 1974-08-06 Nordson Corp Thermoplastic applicator system in which the pump back-pressure controls the dispensing outlet
GB1460015A (en) * 1973-03-16 1976-12-31 Grace W R & Co Dispensing device and method
DE4037692C2 (de) * 1990-11-27 1996-06-13 Focke & Co Vorrichtung zur Formgebung von Klappschachteln für Zigaretten
DE4041599A1 (de) * 1990-12-22 1992-06-25 Focke & Co Vorrichtung zum herstellen von klappschachteln
DE4404721B4 (de) * 1994-02-15 2004-01-29 Focke Gmbh & Co. Kg Vorrichtung zum Transport von Klappschachteln

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2747539A (en) * 1952-12-23 1956-05-29 Alrid B Peffer Pan greasing apparatus
US3081947A (en) * 1959-06-26 1963-03-19 Continental Can Co Pressure operated spray gun
US3233583A (en) * 1961-11-01 1966-02-08 Abc Packaging Machine Corp Selective dispensing apertures in fluid applicator

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2747539A (en) * 1952-12-23 1956-05-29 Alrid B Peffer Pan greasing apparatus
US3081947A (en) * 1959-06-26 1963-03-19 Continental Can Co Pressure operated spray gun
US3233583A (en) * 1961-11-01 1966-02-08 Abc Packaging Machine Corp Selective dispensing apertures in fluid applicator

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3511138A (en) * 1967-04-20 1970-05-12 Kliklok Corp Box erecting devices for reducing the effect of stringing out of adhesives
US3713952A (en) * 1969-10-24 1973-01-30 Fibreboard Corp Apparatus for heat sealing cartons
US3906893A (en) * 1972-07-12 1975-09-23 Imp Group Ltd Impregnation of a travelling web
US3865017A (en) * 1974-01-02 1975-02-11 Faustel Inc Machine for making file folders
WO1990000471A1 (de) * 1988-07-08 1990-01-25 Georg Krebs Verfahren und vorrichtung zum herstellen von klebenähten quer zur bewegungsrichtung einer bahn
US5183523A (en) * 1990-08-15 1993-02-02 Philip Morris Incorporated Apparatus for ultrasonically bonding endcaps to a container of dissimilar material
EP1219540A1 (en) * 2000-12-22 2002-07-03 G.D Societ Per Azioni Method, assembly and unit for gumming articles
EP3138785A1 (en) * 2015-09-02 2017-03-08 Sluis Cigar Machinery B.V. Wax applicator
EP3138785B1 (en) 2015-09-02 2019-01-30 Sluis Cigar Machinery B.V. Method and system for manufacturing a tobacco pouch
CN113211801A (zh) * 2021-05-05 2021-08-06 深圳市瀚宏数码科技有限公司 一种音箱外壳蒙布加工用热熔装置

Also Published As

Publication number Publication date
SE330122B (sv) 1970-11-02
FR1514567A (fr) 1968-02-23
BE695805A (sv) 1967-09-01
GB1176733A (en) 1970-01-07
CH464672A (de) 1968-10-31
DE1561416A1 (de) 1970-04-02
FI47854B (sv) 1974-01-02
NO123783B (sv) 1972-01-17
AT295410B (de) 1972-01-10
ES338968A1 (es) 1968-09-01
FI47854C (sv) 1974-04-10
DE1561416C3 (de) 1973-01-04
NL6705044A (sv) 1968-01-29
DK128343B (da) 1974-04-16

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