Process for producing a syntactically foamed polymer composition, preferably a pressure-sensitive adhesive composition, apparatus for carrying out the process, extrudate and self-adhesive tape
US-9499676-B2 · Nov 22, 2016 · US
Foamed polymeric composition
US12570820B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12570820-B2 |
| Application number | US-202017755945-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 23, 2020 |
| Priority date | Nov 26, 2019 |
| Publication date | Mar 10, 2026 |
| Grant date | Mar 10, 2026 |
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- Title
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Abstract
Official abstract text for this publication.
The present disclosure relates to an extrusion apparatus comprising: a) a planetary roller extruder; b) a melt pump arranged downstream of the extruder; c) optionally, a fluid feeding equipment; d) a static cooling mixer equipment arranged downstream of the melt pump; e) a foaming equipment arranged downstream of the static cooling mixer equipment. The present disclosure also relates to a process of manufacturing a foamed polymeric composition and uses thereof.
First claim
Opening claim text (preview).
The invention claimed is: 1 . An extrusion apparatus comprising: a) a planetary roller extruder; b) a melt pump arranged downstream of the planetary roller extruder; c) optionally, a fluid feeding equipment; d) a two-part static cooling mixer equipment arranged downstream of the melt pump, the two-part static cooling mixer equipment comprised of: a static mixer having mixing elements that are either electrically heated or not actively temperature controlled; and a cooling mixer directly arranged downstream of the static mixer and having mixing elements that are hollow and temperature controlled by oil; and e) a foaming equipment arranged downstream of the static cooling mixer equipment. 2 . An apparatus according claim 1 , wherein the melt pump is designed such as to provide a first processing zone Z 1 having a pressure P 1 and a second processing zone Z 2 having a pressure P 2 within the melt pump. 3 . An apparatus according to claim 2 , wherein the first processing zone Z 1 and the second processing zone Z 2 are two distinct processing zones, wherein P 2 is greater than P 1 , wherein P 2 is greater than 6.5 MPa, and wherein the difference between P 1 and P 2 is greater than 3 MPa. 4 . An apparatus according to claim 1 , comprising fluid feeding equipment in fluid connection with the static mixer. 5 . An apparatus according to claim 4 , wherein the fluid feeding equipment comprises an injection port in the static mixer.
Assignees
Inventors
Classifications
of vinyl aromatic monomers and conjugated dienes · CPC title
Polypropene · CPC title
CO2, N2 or noble gases · CPC title
Extrusion of the foamable blend · CPC title
Numerical temperature values · CPC title
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- What does patent US12570820B2 cover?
- The present disclosure relates to an extrusion apparatus comprising: a) a planetary roller extruder; b) a melt pump arranged downstream of the extruder; c) optionally, a fluid feeding equipment; d) a static cooling mixer equipment arranged downstream of the melt pump; e) a foaming equipment arranged downstream of the static cooling mixer equipment. The present disclosure also relates to a proce…
- Who is the assignee on this patent?
- 3M Innovative Properties Company
- What technology area does this patent fall under?
- Primary CPC classification C08J9/122. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Mar 10 2026 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 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).