IT1111805B - Heat-shrinkable food packaging films - comprising laminates of PVDC and oriented polyethylene, for sterilisable packs which exclude oxygen - Google Patents
Heat-shrinkable food packaging films - comprising laminates of PVDC and oriented polyethylene, for sterilisable packs which exclude oxygenInfo
- Publication number
- IT1111805B IT1111805B IT2054879A IT2054879A IT1111805B IT 1111805 B IT1111805 B IT 1111805B IT 2054879 A IT2054879 A IT 2054879A IT 2054879 A IT2054879 A IT 2054879A IT 1111805 B IT1111805 B IT 1111805B
- Authority
- IT
- Italy
- Prior art keywords
- pvdc
- heat
- oriented polyethylene
- sterilisable
- laminates
- Prior art date
Links
- 239000004698 Polyethylene Substances 0.000 title abstract 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title abstract 2
- 229910052760 oxygen Inorganic materials 0.000 title abstract 2
- 239000001301 oxygen Substances 0.000 title abstract 2
- -1 polyethylene Polymers 0.000 title abstract 2
- 229920000573 polyethylene Polymers 0.000 title abstract 2
- 229920001328 Polyvinylidene chloride Polymers 0.000 title 1
- 229920006280 packaging film Polymers 0.000 title 1
- 239000012785 packaging film Substances 0.000 title 1
- 239000005033 polyvinylidene chloride Substances 0.000 title 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 abstract 1
- 239000000853 adhesive Substances 0.000 abstract 1
- 230000001070 adhesive effect Effects 0.000 abstract 1
- 230000004888 barrier function Effects 0.000 abstract 1
- 229920001577 copolymer Polymers 0.000 abstract 1
- 230000008021 deposition Effects 0.000 abstract 1
- 229920001519 homopolymer Polymers 0.000 abstract 1
- 238000004806 packaging method and process Methods 0.000 abstract 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 abstract 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 abstract 1
- 238000003466 welding Methods 0.000 abstract 1
Landscapes
- Laminated Bodies (AREA)
Abstract
Heat-shrinkable bags or sachets for packaging foodstuffs are made by folding and welding laminated films comprising two layers of oriented polyethylene (I) with an intermediate layer of PVdc (II) to act as a barrier layer to oxygen. Specifically, (I) is a homopolymer or is a copolymer contg. =5% wt. vinyl acetate or =3% wt. propylene, and is oriented and irradiated prior to being coated with (II), pref. by deposition from soln. Opt. the internal surfaces of the layers of (I) are coated with an interfacial adhesive prior to being coated with/laid up on (II). The ratio of the thickness of (I) and (II) is >=7:1 pref. 8:1, opt up to 25:1, typically with thicknesses of 19-35 mu m for (I) and up to 6 mu m for (II). Suitable for enclosing, packages to be pasteurised or sterilised using temps. in the range 80-120 degrees C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT2054879A IT1111805B (en) | 1979-02-26 | 1979-02-26 | Heat-shrinkable food packaging films - comprising laminates of PVDC and oriented polyethylene, for sterilisable packs which exclude oxygen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT2054879A IT1111805B (en) | 1979-02-26 | 1979-02-26 | Heat-shrinkable food packaging films - comprising laminates of PVDC and oriented polyethylene, for sterilisable packs which exclude oxygen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| IT7920548A0 IT7920548A0 (en) | 1979-02-26 |
| IT1111805B true IT1111805B (en) | 1986-01-13 |
Family
ID=11168605
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IT2054879A IT1111805B (en) | 1979-02-26 | 1979-02-26 | Heat-shrinkable food packaging films - comprising laminates of PVDC and oriented polyethylene, for sterilisable packs which exclude oxygen |
Country Status (1)
| Country | Link |
|---|---|
| IT (1) | IT1111805B (en) |
-
1979
- 1979-02-26 IT IT2054879A patent/IT1111805B/en active
Also Published As
| Publication number | Publication date |
|---|---|
| IT7920548A0 (en) | 1979-02-26 |
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