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Polypropylene melt-blown sealant films for retort packaging
US9156972B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9156972-B2 |
| Application number | US-74342608-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 3, 2008 |
| Priority date | Dec 5, 2007 |
| Publication date | Oct 13, 2015 |
| Grant date | Oct 13, 2015 |
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Abstract
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A polypropylene containing resin composition suitable for use in forming films by the air quenched melt-blown film process for use as a sealing layer in a laminate for retort pouches, The resin composition includes from 80 to 98 percent by weight of a coupled impact propylene copolymer and from 2 to 20 percent by weight of a propylene-ethylene copolymer having from 2 to 10 percent by weight units derived from ethylene, wherein the composition has a melt flow rate of from 0.1 to 2.5 grams/10 minutes.
First claim
Opening claim text (preview).
What is claimed is: 1. A retort pouch comprising: a first sheet and an opposing second sheet, each sheet comprising an outer layer comprising a polyester, an innermost seal layer consisting of a single layer film comprising a polymeric blend of (A) from 90 to 98 percent by weight of a coupled impact propylene copolymer comprising from 3 to 11 percent by weight of units derived from ethylene based on the total weight of the impact propylene copolymer and comprising a propyle…
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Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
- C08L23/12Primary
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
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- What does patent US9156972B2 cover?
- A polypropylene containing resin composition suitable for use in forming films by the air quenched melt-blown film process for use as a sealing layer in a laminate for retort pouches, The resin composition includes from 80 to 98 percent by weight of a coupled impact propylene copolymer and from 2 to 20 percent by weight of a propylene-ethylene copolymer having from 2 to 10 percent by weight uni…
- Who is the assignee on this patent?
- Duguid Grant, Demarco Rosanna, Dow Global Technologies Llc
- What technology area does this patent fall under?
- Primary CPC classification C08L23/12. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Oct 13 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).