IT1111539B - Hermetic sealing under vacuum of polyethylene container neck - by heat of friction generated by vibrating clamping jaws - Google Patents

Hermetic sealing under vacuum of polyethylene container neck - by heat of friction generated by vibrating clamping jaws

Info

Publication number
IT1111539B
IT1111539B IT2094179A IT2094179A IT1111539B IT 1111539 B IT1111539 B IT 1111539B IT 2094179 A IT2094179 A IT 2094179A IT 2094179 A IT2094179 A IT 2094179A IT 1111539 B IT1111539 B IT 1111539B
Authority
IT
Italy
Prior art keywords
under vacuum
heat
clamping jaws
neck
container neck
Prior art date
Application number
IT2094179A
Other languages
Italian (it)
Other versions
IT7920941A0 (en
Original Assignee
Vacuum Capatainer Int
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 Vacuum Capatainer Int filed Critical Vacuum Capatainer Int
Priority to IT2094179A priority Critical patent/IT1111539B/en
Publication of IT7920941A0 publication Critical patent/IT7920941A0/en
Application granted granted Critical
Publication of IT1111539B publication Critical patent/IT1111539B/en

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  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

The neck of a container of thermoplastic material, through which it has been filled, is flattened in the zone in which it is desired to make a welded joint. The flattening is effected so as to form two walls facing each other, jointed by two folds aligned at right angles to the proposed seam. The two walls are pressed together and relative, alternating motion between them is generated, whilst the pressure is maintained, for pref. at right angles to the direction of the neck. This heats up the zone of contact and causes a localised melting together. The relative motion is interrupted and the welding of the zones takes place during cooling. Used for sealing containers of thermoplastic material into which goods have been tipped in small or large quantities for conditioning under vacuum. Arrangement overcomes the difficulties arising from the need to control the degree of flow on the two faces brought together, which is further complicated by irregularities in thickness of the film.
IT2094179A 1979-03-13 1979-03-13 Hermetic sealing under vacuum of polyethylene container neck - by heat of friction generated by vibrating clamping jaws IT1111539B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
IT2094179A IT1111539B (en) 1979-03-13 1979-03-13 Hermetic sealing under vacuum of polyethylene container neck - by heat of friction generated by vibrating clamping jaws

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT2094179A IT1111539B (en) 1979-03-13 1979-03-13 Hermetic sealing under vacuum of polyethylene container neck - by heat of friction generated by vibrating clamping jaws

Publications (2)

Publication Number Publication Date
IT7920941A0 IT7920941A0 (en) 1979-03-13
IT1111539B true IT1111539B (en) 1986-01-13

Family

ID=11174373

Family Applications (1)

Application Number Title Priority Date Filing Date
IT2094179A IT1111539B (en) 1979-03-13 1979-03-13 Hermetic sealing under vacuum of polyethylene container neck - by heat of friction generated by vibrating clamping jaws

Country Status (1)

Country Link
IT (1) IT1111539B (en)

Also Published As

Publication number Publication date
IT7920941A0 (en) 1979-03-13

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