IT1209857B - Firm cardboard box esp. record case
- Google Patents
Firm cardboard box esp. record case
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Publication number
IT1209857B
IT1209857BIT8148165AIT4816581AIT1209857BIT 1209857 BIT1209857 BIT 1209857BIT 8148165 AIT8148165 AIT 8148165AIT 4816581 AIT4816581 AIT 4816581AIT 1209857 BIT1209857 BIT 1209857B
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Application filed by Kolomenskoe StankostroitelnoefiledCriticalKolomenskoe Stankostroitelnoe
Priority to IT8148165ApriorityCriticalpatent/IT1209857B/en
Publication of IT8148165A0publicationCriticalpatent/IT8148165A0/en
Application grantedgrantedCritical
Publication of IT1209857BpublicationCriticalpatent/IT1209857B/en
A method of making a rigid cardboard box, esp. a record case, of cardboard coated with plastics foil, consists of punching the box to shape from the card and simultaneously slitting it to half its thickness along the fold lines and hinges. The card is placed in the depression of a die and pressed into shape, the edge zone is cut between the beading thus formed, and the lateral edges are raised, connected at the corners and the whole box is laminated with the plastics foil. This procedure greatly simplifies the prodn. of a cardboard box by reducing it basically to a single operation.
IT8148165A1981-03-311981-03-31Firm cardboard box esp. record case
IT1209857B
(en)
Method for producing a thermoplastics folder and the like by simultaneously sealing and tear/cutting the marginal edge to produced a uniform margin and the article produced thereby