GB1419971A - Sealing apparatus - Google Patents
Sealing apparatusInfo
- Publication number
- GB1419971A GB1419971A GB5332672A GB5332672A GB1419971A GB 1419971 A GB1419971 A GB 1419971A GB 5332672 A GB5332672 A GB 5332672A GB 5332672 A GB5332672 A GB 5332672A GB 1419971 A GB1419971 A GB 1419971A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sealing
- bars
- head
- film
- clamping
- Prior art date
- 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
Links
Classifications
-
- 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
- B65B61/00—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages
- B65B61/04—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for severing webs, or for separating joined packages
- B65B61/06—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for severing webs, or for separating joined packages by cutting
-
- 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
- B29C65/74—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area
- B29C65/745—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area using a single unit having both a severing tool and a welding tool
- B29C65/7451—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area using a single unit having both a severing tool and a welding tool the severing tool and the welding tool being movable with respect to one-another
-
- 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
- B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
- B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
- B29C66/43—Joining a relatively small portion of the surface of said articles
- B29C66/431—Joining the articles to themselves
-
- 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
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
- B29C66/737—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined
- B29C66/7371—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined oriented or heat-shrinkable
- B29C66/73711—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined oriented or heat-shrinkable oriented
-
- 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
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
- B29C66/737—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined
- B29C66/7371—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined oriented or heat-shrinkable
- B29C66/73711—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined oriented or heat-shrinkable oriented
- B29C66/73713—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined oriented or heat-shrinkable oriented bi-axially or multi-axially
-
- 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
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
- B29C66/737—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined
- B29C66/7371—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined oriented or heat-shrinkable
- B29C66/73715—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined oriented or heat-shrinkable heat-shrinkable
-
- 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
- B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
- B29C66/816—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the mounting of the pressing elements, e.g. of the welding jaws or clamps
- B29C66/8161—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the mounting of the pressing elements, e.g. of the welding jaws or clamps said pressing elements being supported or backed-up by springs or by resilient 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
- B29C66/82—Pressure application arrangements, e.g. transmission or actuating mechanisms for joining tools or clamps
- B29C66/822—Transmission mechanisms
- B29C66/8221—Scissor or lever mechanisms, i.e. involving a pivot point
-
- 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
- B29C66/82—Pressure application arrangements, e.g. transmission or actuating mechanisms for joining tools or clamps
- B29C66/824—Actuating mechanisms
- B29C66/8242—Pneumatic or hydraulic drives
-
- 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
- B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
- B29C66/832—Reciprocating joining or pressing tools
- B29C66/8324—Joining or pressing tools pivoting around one axis
-
- 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
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
- B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
- B29C66/112—Single lapped joints
- B29C66/1122—Single lap to lap joints, i.e. overlap joints
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Package Closures (AREA)
Abstract
1419971 Sealing apparatus for heat-shrinkable film W R GRACE & CO 12 Nov 1973 [17 Nov 1972] 53326/72 Heading B8C [Also in Division B5] Apparatus for heat-sealing together superposed layers of heat shrinkable film comprises a pair of clamping bars 9, 10 and 14, 16 for holding superposed layers of heat-shrinkable film in engagement with one another and associated with heat sealing means for sealing together the clamped layers, a cutting knife, Fig. 7, mounted for movement with one of the clamping bars, means 11 for moving the cutting knife relative to said one clamping bar to cross the plane of contact between the clamping bars to sever the superposed layers of film, means 21-24 for sensing the proximity of the other of the clamping bars to said one clamping bar with which the knife moves, and means for locking the cutting knife against movement relative to said one clamping bar until the sensing means indicates close proximity to the other clamping bar. A longitudinally, and centrally, folded thermoplastic film of shrinkable material is fed, from a supply roll, not shown, and round guide pulleys 3-5 so that the lower, and upper, halves thereof pass respectively below and above a laterallyadjustable guide plate 6 which is located at the loading table and has an upstanding end 7. The supply roll is removably carried on a bar 91, Fig. 3, removably mounted in V-shaped bearings 45 on a carriage 42 which is slidably mounted for withdrawal from beneath the table for replacing a spent roll, the bar 41 having an adjustable bearing member 46 to accommodate rolls of different sizes. The fold of the film is disposed at the rear of the machine so that goods to be packaged, e.g. weighed meat in a tray, can be inserted, by an operator, between the two spaced film layers. With a sealing head, pivoted at 8 to the framework of the machine, in its open position, the film with the enclosed tray, is lifted manually and placed on a sealing table 2 so that the film lies across the side sealing bar 10, Fig. 1, with its free edges overhanging the front sealing bar 9. The sealing head is then pulled down manually, almost to its closed position, whereat a timing cam, not shown, is triggered by levers 21-24 to operate a pneumatic holding jack 11, connected between the sealing head and the framework, Fig. 3. The jack 11 forces the sealing head down with high pressure against the fixed sealing bars 9, 10 to provide a relatively low sealing temperature and a short cooling time. The sealing head carries a resilient plastics pad which, when the head is closed, bears downwardly on the tray and its surrounding layers of film, the sealing bars 9, 10 not meeting at the corner at the front of the sealing head to provide a vent hole for air during a subsequent heat-shrinking operation. The sealing table is mounted on a telescopic tube assembly 12 which is spring-urged upwardly and has a locking handle 13 to set the table 2 for different thicknesses of package. The sealing head, Fig. 4, carries sealing bars 14, 16 which, to assist alignment, are pivotally mounted respectively to the sealing head at their mid-points 15, 17 the head having a handle 19, and the rod of the holding jack 11 being hinged to the head at 18b. The bars 14, 16 are associated with serrated cutting knives, Fig. 7, each of which is unable to descend below the corresponding clamping surface until the sealing head has been almost closed. During the final lowering movement of the sealing head, Fig. 6, the spring-loaded trigger levers 21-24 are pivoted upwardly against their springs as they contact the fixed bars 9, 10 so that locking pins 25 on the levers are moved from the detaining portions 21b-24b of corresponding slots 21a-24b in the knives associated with the sealing bars 14, 15 and into the release portions 21c-24c of the slots, head springs 29, 30 of the sealing bars 14, 15 being compressed and the knife blades 31, 32 being driven down to cut the two layers of film and engage in corresponding grooves in the fixed sealing bars 9, 10. In this manner a knife cannot be operated until all of the associated trigger levers 21-24 have been tripped. Heating wires in the clamping bars are located close to metal bars which act as heat sinks. A pneumatic circuit, with safety precautions, and which regulates the operation of the jack 11 is described with reference to Fig. 8 (not shown) and is housed in a removable control box 40.
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB5332672A GB1419971A (en) | 1972-11-17 | 1972-11-17 | Sealing apparatus |
IT31401/73A IT999418B (en) | 1972-11-17 | 1973-11-16 | SEALING APPARATUS |
NL7315729A NL7315729A (en) | 1972-11-17 | 1973-11-16 | |
BE137876A BE807460A (en) | 1972-11-17 | 1973-11-16 | WELDING DEVICE |
CH1611973A CH570863A5 (en) | 1972-11-17 | 1973-11-16 | |
FR7340993A FR2207011B3 (en) | 1972-11-17 | 1973-11-16 | |
DE2357311A DE2357311A1 (en) | 1972-11-17 | 1973-11-16 | SEALING DEVICE |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB5332672A GB1419971A (en) | 1972-11-17 | 1972-11-17 | Sealing apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1419971A true GB1419971A (en) | 1975-12-31 |
Family
ID=10467389
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB5332672A Expired GB1419971A (en) | 1972-11-17 | 1972-11-17 | Sealing apparatus |
Country Status (7)
Country | Link |
---|---|
BE (1) | BE807460A (en) |
CH (1) | CH570863A5 (en) |
DE (1) | DE2357311A1 (en) |
FR (1) | FR2207011B3 (en) |
GB (1) | GB1419971A (en) |
IT (1) | IT999418B (en) |
NL (1) | NL7315729A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113734531A (en) * | 2021-06-03 | 2021-12-03 | 张志坚 | Packaging machine, sealing mechanism and process for sealing packaging bag |
CN118270327A (en) * | 2024-06-03 | 2024-07-02 | 烟台白马包装有限公司 | Packaging bag heat sealing device |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108167859B (en) * | 2018-01-31 | 2023-06-27 | 华电电力科学研究院有限公司 | Safe anti-explosion device and method for 50% lignite blended combustion of bituminous coal boiler of middle-stored pulverizing system |
CN108820369A (en) * | 2018-05-31 | 2018-11-16 | 河南欧文包装制品有限公司 | A kind of high-efficient disposable lunch-box packing machine |
CN109366188B (en) * | 2018-12-10 | 2024-08-09 | 彭华斌 | Automatic cutting double-end pipe end processing equipment for copper pipe |
CN113772189B (en) * | 2021-09-09 | 2022-12-30 | 云南安化有限责任公司 | Emulsion explosive packagine machine |
-
1972
- 1972-11-17 GB GB5332672A patent/GB1419971A/en not_active Expired
-
1973
- 1973-11-16 FR FR7340993A patent/FR2207011B3/fr not_active Expired
- 1973-11-16 BE BE137876A patent/BE807460A/en unknown
- 1973-11-16 NL NL7315729A patent/NL7315729A/xx unknown
- 1973-11-16 IT IT31401/73A patent/IT999418B/en active
- 1973-11-16 CH CH1611973A patent/CH570863A5/xx not_active IP Right Cessation
- 1973-11-16 DE DE2357311A patent/DE2357311A1/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113734531A (en) * | 2021-06-03 | 2021-12-03 | 张志坚 | Packaging machine, sealing mechanism and process for sealing packaging bag |
CN113734531B (en) * | 2021-06-03 | 2023-04-25 | 张志坚 | Packaging machine, sealing mechanism and process for sealing packaging bags |
CN118270327A (en) * | 2024-06-03 | 2024-07-02 | 烟台白马包装有限公司 | Packaging bag heat sealing device |
Also Published As
Publication number | Publication date |
---|---|
CH570863A5 (en) | 1975-12-31 |
BE807460A (en) | 1974-03-15 |
NL7315729A (en) | 1974-05-21 |
FR2207011A1 (en) | 1974-06-14 |
DE2357311A1 (en) | 1974-05-30 |
FR2207011B3 (en) | 1976-10-01 |
IT999418B (en) | 1976-02-20 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |