EP1221411B1 - Apparatus for continuously forming vacuum packaged body - Google Patents

Apparatus for continuously forming vacuum packaged body Download PDF

Info

Publication number
EP1221411B1
EP1221411B1 EP20010124398 EP01124398A EP1221411B1 EP 1221411 B1 EP1221411 B1 EP 1221411B1 EP 20010124398 EP20010124398 EP 20010124398 EP 01124398 A EP01124398 A EP 01124398A EP 1221411 B1 EP1221411 B1 EP 1221411B1
Authority
EP
European Patent Office
Prior art keywords
seal
tube film
blocks
packaged
vacuum line
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 - Lifetime
Application number
EP20010124398
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1221411A1 (en
Inventor
Tadoru Suga
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ibaraki Seiki Co Ltd
Original Assignee
Ibaraki Seiki Machinery Co Ltd
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 Ibaraki Seiki Machinery Co Ltd filed Critical Ibaraki Seiki Machinery Co Ltd
Publication of EP1221411A1 publication Critical patent/EP1221411A1/en
Application granted granted Critical
Publication of EP1221411B1 publication Critical patent/EP1221411B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B65B31/00—Packaging articles or materials under special atmospheric or gaseous conditions; Adding propellants to aerosol containers
    • B65B31/04—Evacuating, pressurising or gasifying filled containers or wrappers by means of nozzles through which air or other gas, e.g. an inert gas, is withdrawn or supplied

Definitions

  • This invention relates to an apparatus for sequentially isolating and sealing a tube film storing a number of materials to be packaged at equal spaces in a column and moving between the respective materials to be packaged and simultaneously evacuating the interior of the tube film to continuously form a vacuum packaged body.
  • U.S.Patent No. 4601159 discloses the technology where a longitudinally moving tube film is perpendicularly nipped by a pair of seal bars, and immediately before the respective materials to be packaged in the tube film are isolated and sealed, the tube film is cut by cutting edges incorporated in the seal bars, and the air in the tube film is removed through the cut portion to form a continuous vacuum packaged body.
  • the details of the technology disclosed in the above specification are such that the tube film is cut between the front and rear materials to be packaged, the cut end parts are sucked to the dome-like wall inner surface to be largely opened, and the air in the tube film is removed from the opening parts.
  • the positive opening of the cut end part is intended for heightening the efficiency of removing the air in the tube film, but unsuppressed opening for the tube film in the apparatus has high possibility of causing distortion at the open end part, so that even if the open edge is sealed by heat, the above distortion impairs air tightness of the sealed part to exert a bad influence upon the sealing performance of the vacuum packaged body.
  • the above apparatus is adapted to cut a film opening part and remove the same, and heat-seal two new opposite cut ends of both sides of the removed part, resulting in the disadvantage of causing lowering of efficiency due to the waste of a film in cutting and removing the film and the complicatedness of operation process.
  • the object of the invention is achieved by providing a packaging apparatus including a seal bar and a seal table for sealing a tube film in the direction right-angled to the direction of a track disposed in the midway of the track for transferring the tube film storing materials to be packaged at equal spaces in a column along the longitudinal direction, the apparatus being formed by
  • the tube film for covering the materials to be packaged is nipped by the skirt part edges of the paired seal blocks.
  • the plural intermittent teeth formed on the front side of the skirt parts as one points in the transfer direction of the material to be packaged spot close the tube film, and the vacuum suction force of the sub-vacuum line is applied to each port formed on the standing gap formed thin along the front side of the intermittent teeth to flare the tube film, so that the tube film forms a nipping gap between the respective intermittent teeth.
  • the cutting edge provided on the seal bar installed in one seal block is forced into the receiving groove of the seal table in the other seal block to cut the tube film in the area surrounded by the skirt parts, and the air in the bag in front of the seal blocks is sucked through the spot closing gap from between the seal bar and the seal table into the main suction line through the receiving groove in the seal table.
  • the tube film is thus flared by the sub-vacuum suction force to stick the tube film to the faces of the thin standing gap, and the air in the tube film is removed through the spot gap between the respective intermittent teeth, whereby the vibration of the tube film due to the removed air impact is restrained to prevent the film from being distorted, and the above inhibition of distortion eliminates cut-down of the film so as to prevent waste of the film.
  • the sub-vacuum line and the main vacuum line are connected to a vacuum pump through a vacuum tank.
  • the intermittent removal of air in the tube film corresponding to the pitch transfer of the material to be packaged is performed impulsively by pressure accumulation function of the vacuum tank so that the capability is not lowered.
  • cooling water is passed through the intermittent teeth formed by the skirt parts of the seal blocks to be cooled.
  • the material to be packaged in front of the seal blocks is pressed and supported by a block made of urethane foam.
  • the shrinkage of the tube film due to removal of air through the spot gaps between the respective intermittent teeth causes the material to be packaged to necessarily move
  • the material to be packaged is softly pressed and supported by the block made of urethane foam so that the shrinkage of the film more than needed is inhibited to restrain the generation of creases of the film and perform beautiful sealing.
  • sealing strength can be increased.
  • a tube film 20 in Fig. 1 is formed by rolling a belt-like film in a bag form-fill-sealing machine, and simultaneously a number of materials 21 to be packaged are stored at equal spaces in the interior thereof. While a pair of upper and lower seal blocks 22, 23 installed in the same packaging machine respectively displace along a dotted-line track 24 according to the transfer in the direction of an arrow of the above materials 21 to be packaged, they nip the tube film 20 between the materials 21 to be packaged to perform air suction and heat sealing action in the film.
  • the constitution of the present embodiment will be described in the following.
  • Fig. 2 shows the about left half of a frame structure supporting the above paired seal blocks 22, 23, and also in the right area not illustrated, the same structure symmetrical to the drawing continuously exists. That is, the above structure is so constructed that the upper and lower side of a pair of side plates 25 on both sides are connected by tie materials 26 to form a portal frame. Slide blocks 27 respectively fixed to the lower parts of the side plates 25 on both sides are slidably supported on a pair of horizontal guide rods 28, and both ends of the above both movable blocks 22, 23 are slidably supported on round post materials 29 respectively erected on both slide blocks 27.
  • the portal frame is reciprocated along the guide rods 28 by a crank mechanism not shown.
  • Fig. 3 shows the condition where the tube film 20 between the front and rear materials 21 to be packaged is nipped by the upper and lower seal blocks, and the upper seal block 22 is provided with a seal bar 35 mounted in a skirt part 39 continuously formed on the lower side thereof, the lower seal block 23 is provided with a seal table 36 mounted in a reverse skirt part 40 formed on the upper surface of the seal block 23, and the seal bar 35 and the seal block 36 respectively contain a pipe heater 37 for generating film welding heat.
  • the front sides 39a, 40a of the respective skirt parts of the above both seal blocks in the transfer direction 38 of the material 21 to be packaged form a standing gap ranging from 1mm to 2mm between the opposite edges, the air 41 in the front tube film 20 can be circulated through the standing gap , and an embodiment of forming means for such a gap is as shown in the drawings mentioned later.
  • FIG. 4 shows the front faces of the central parts of both seal blocks 22, 23, and Fig. 5 shows the perspective section of the lower seal block 23.
  • a pair of attached blocks 42, 43 embedded in the above both seal blocks 22, 23 and fixed opposite to each other have plural intermittent teeth 44, 45 fastened upon the tube film at the inner edges thereof, a continuous standing gap 46 is formed between the outer edges of the intermittent teeth, and plural ports 47 formed on the upper and lower sides of the standing gap are connected to a sub-vacuum line 49 through passages 48.
  • a first fluid cylinder 50 fixed to the upper seal block 22 vertically slides a cutting edge 51 mounted in the seal bar 35 and forces the cutting edge 51 into a receiving groove 52 of the seal table 36 in the lower area, thereby cutting the tube film.
  • a first fluid cylinder 50 fixed to the upper seal block 22 vertically slides a cutting edge 51 mounted in the seal bar 35 and forces the cutting edge 51 into a receiving groove 52 of the seal table 36 in the lower area, thereby cutting the tube film.
  • the'described sub-vacuum line 49 is connected to a vacuum tank 61 of designated capacity connected to a vacuum pump 60 through a normally-closed first opening and closing valve 62, and the described main vacuum line 63 is connected to the vacuum tank 61 through a normally-closed second opening and closing valve 64.
  • the upper and lower movable blocks 22, 23 completely nip the tube film 20, and simultaneously when the vacuum pressure is applied to the sub-vacuum line 49 by opening the first opening and closing valve 62, the tube film is sucked to the upper and lower surfaces of the standing gap 46 in Fig. 4.
  • a packing 65 mounted on the upper surface of the seal block 23 in Fig. 5 surrounds the receiving groove 52 formed in the seal table as shown in Fig.
  • the upper seal block 22 is provided with soft pressing blocks 71, 72 made of urethane foam and fixed to the front and rear thereof.
  • the tube film 20 is nipped by the relative approach of both upper and lower seal blocks 22, 23 and when the air in the tube film 20 is sucked, the pressing blocks 71, 72 press the material 21 to be packaged to the lower belt conveyers 73, 74, thereby inhibiting the shrinkage of the tube film caused by the described vacuum suction to the utmost.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
  • Vacuum Packaging (AREA)
EP20010124398 2001-01-04 2001-10-25 Apparatus for continuously forming vacuum packaged body Expired - Lifetime EP1221411B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2001000008 2001-01-04
JP2001000008A JP3707538B2 (ja) 2001-01-04 2001-01-04 真空包装体を連続形成する装置

Publications (2)

Publication Number Publication Date
EP1221411A1 EP1221411A1 (en) 2002-07-10
EP1221411B1 true EP1221411B1 (en) 2004-05-06

Family

ID=18868901

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20010124398 Expired - Lifetime EP1221411B1 (en) 2001-01-04 2001-10-25 Apparatus for continuously forming vacuum packaged body

Country Status (4)

Country Link
EP (1) EP1221411B1 (enrdf_load_stackoverflow)
JP (1) JP3707538B2 (enrdf_load_stackoverflow)
DE (1) DE60103120T2 (enrdf_load_stackoverflow)
ES (1) ES2220644T3 (enrdf_load_stackoverflow)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4904948B2 (ja) 2006-07-04 2012-03-28 住友化学株式会社 中間体アルコール化合物の製造方法
GB2481620B (en) * 2010-07-01 2012-08-08 Sheng-Nan Guo Vertical vacuum packing machine
NL2006393C2 (en) * 2011-03-15 2012-09-18 Gks Packaging B V Vacuum packaging apparatus.
EP2907760B1 (en) 2014-02-14 2016-06-08 Ulma Packaging Technological Center, S.Coop. Method and machine for vacuum packaging a product
WO2016071160A1 (en) * 2014-11-05 2016-05-12 Cryovac, Inc. Process and apparatus for gas extraction in packaging
CN106043797B (zh) * 2016-08-19 2018-01-23 天津开发区合普工贸有限公司 实验动物尸体无害化真空包装装置
CN109515879A (zh) * 2018-12-14 2019-03-26 广州市永合祥自动化设备科技有限公司 切刀结构与封袋方法
CN118458073B (zh) * 2024-07-11 2024-09-13 光科真空科技(泰兴)有限公司 一种真空腔体包装用输送装置

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1178958A (fr) * 1956-07-20 1959-05-19 S C I P E R Procédé et machine pour le remplissage de sachets en matière thermosoudable
GB2164315B (en) 1984-09-14 1988-05-11 Grace W R & Co Form-fill-seal machine and method with capability for providing a vacuum or inert gas atmosphere within the package

Also Published As

Publication number Publication date
JP2002205710A (ja) 2002-07-23
DE60103120D1 (de) 2004-06-09
EP1221411A1 (en) 2002-07-10
DE60103120T2 (de) 2005-04-28
JP3707538B2 (ja) 2005-10-19
ES2220644T3 (es) 2004-12-16

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