IT1246868B - Bag of thermoplastic material that is easy to produce on a bagging machine and is adapted to be emptied of the air incorporated by the bagged product - Google Patents

Bag of thermoplastic material that is easy to produce on a bagging machine and is adapted to be emptied of the air incorporated by the bagged product

Info

Publication number
IT1246868B
IT1246868B IT01251790A IT1251790A IT1246868B IT 1246868 B IT1246868 B IT 1246868B IT 01251790 A IT01251790 A IT 01251790A IT 1251790 A IT1251790 A IT 1251790A IT 1246868 B IT1246868 B IT 1246868B
Authority
IT
Italy
Prior art keywords
bag
closed
perforations
thermoplastic material
microperforations
Prior art date
Application number
IT01251790A
Other languages
Italian (it)
Other versions
IT9012517A0 (en
IT9012517A1 (en
Inventor
Eligio Longhi
Original Assignee
Bl Macchine Automatiche
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 Bl Macchine Automatiche filed Critical Bl Macchine Automatiche
Priority to IT01251790A priority Critical patent/IT1246868B/en
Publication of IT9012517A0 publication Critical patent/IT9012517A0/en
Publication of IT9012517A1 publication Critical patent/IT9012517A1/en
Application granted granted Critical
Publication of IT1246868B publication Critical patent/IT1246868B/en

Links

Landscapes

  • Basic Packing Technique (AREA)
  • Packages (AREA)

Abstract

At least one of the walls of the bag of thermoplastic material is wholly or partly a double wall, i.e. is formed from at least two superimposed sheets A-B. The inner sheet A has microperforations 1 on the part covered by the outer sheet, while the outer sheet B has one or more perforations 2 which are offset from the microperforations below in such a way as to be closed by the inner sheet. After the bag has been filled and closed, it is exposed to an external vacuum of an appropriate degree to remove the air from the bag through the labyrinth formed by the inner microperforations and outer perforations. When the bag leaves the air extractor, its walls collapse around the product and the said perforations 1, 2 are closed by the intimate and mutual contact of the sheets which form the double wall. The outer perforations are preferably then closed by heat- sealing or other methods, for example an adhesive, or else adhesive tapes 6. It is possible to interpose at least one insert acting as a filter between the two sheets of the double wall. <IMAGE>
IT01251790A 1990-09-14 1990-09-14 Bag of thermoplastic material that is easy to produce on a bagging machine and is adapted to be emptied of the air incorporated by the bagged product IT1246868B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
IT01251790A IT1246868B (en) 1990-09-14 1990-09-14 Bag of thermoplastic material that is easy to produce on a bagging machine and is adapted to be emptied of the air incorporated by the bagged product

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT01251790A IT1246868B (en) 1990-09-14 1990-09-14 Bag of thermoplastic material that is easy to produce on a bagging machine and is adapted to be emptied of the air incorporated by the bagged product

Publications (3)

Publication Number Publication Date
IT9012517A0 IT9012517A0 (en) 1990-09-14
IT9012517A1 IT9012517A1 (en) 1992-03-14
IT1246868B true IT1246868B (en) 1994-11-28

Family

ID=11141102

Family Applications (1)

Application Number Title Priority Date Filing Date
IT01251790A IT1246868B (en) 1990-09-14 1990-09-14 Bag of thermoplastic material that is easy to produce on a bagging machine and is adapted to be emptied of the air incorporated by the bagged product

Country Status (1)

Country Link
IT (1) IT1246868B (en)

Also Published As

Publication number Publication date
IT9012517A0 (en) 1990-09-14
IT9012517A1 (en) 1992-03-14

Similar Documents

Publication Publication Date Title
IE782259L (en) Deaerating valve for a sack
KR950011497U (en) Tubular elements forming a vacuum packaging bag of the product
CA1231679A (en) Packaging of a block of cheese or other soft product
DE59307211D1 (en) Device for the production of tubular bags
EP0371539A3 (en) Flexible package having main compartment and ancillary compartment
GB2245254A (en) Packaging for fragile articles
EP0626312A3 (en) Vacuum package, method and apparatus for making such vacuum package filled with granular material.
NO303727B1 (en) Packaging of folded foil material and in the form of a bag, for products of low weight
DE59406850D1 (en) BAGS, IN PARTICULAR FOR PACKAGING HUMIDITY-SENSITIVE SUBSTANCES
SE9200529L (en) Process for packaging and compressing disposable absorbent articles and packaging made according to the method
IT1246868B (en) Bag of thermoplastic material that is easy to produce on a bagging machine and is adapted to be emptied of the air incorporated by the bagged product
JPS5453092A (en) Shrink-wrapping method of tray
FR2436719A1 (en) WATERPROOF PACKAGING BAG AND MANUFACTURING METHOD THEREOF
US3319873A (en) Wrapper for rolls
WO1997041032A3 (en) Method and apparatus for packaging tea bags
SE9403434L (en) Procedure for filling a valve bag and valve bag
KR910003906B1 (en) Method a vacuum packing of pillow
JPS5237182A (en) Packaging process
JPS6037361Y2 (en) Cooking waste disposal bag
GB1329940A (en) Sterilizable bag-package and a method of producing such packages
JPS56113252A (en) Removal of astringency of persimmon
YU31480A (en) Vacuum apparatus for welding foil bags for packing food articles
IT1242252B (en) Continuous-cycle packaging machine using heat-sealable films
ATE255040T1 (en) PACKAGING BAGS
IT1246026B (en) Improved automatic packing machine for producing, from rolls of plastic type material, hermetically sealable tray packs with a top film

Legal Events

Date Code Title Description
0001 Granted