High texture replication rate sheet compositions, methods of manufacture, and articles made therefrom
US-2019023897-A1 · Jan 24, 2019 · US
Sweeper roller, plastic film manufacturing device that uses same, and manufacturing method
US10150240B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10150240-B2 |
| Application number | US-201414779761-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 18, 2014 |
| Priority date | Mar 27, 2013 |
| Publication date | Dec 11, 2018 |
| Grant date | Dec 11, 2018 |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
A sweeper roller is provided for forming a film, the sweeper roller having helical grooves provided to the surface, wherein the ratio of the surface area of the helical groove portion is 30% or less of the surface area of the sweeper roller, and the width of the helical grooves in the axial direction of the sweeper roller is 25 mm or greater. Provided thereby are: a sweeper roller that does not generate air banks and sweeper marks during high-speed casting and when forming a thick film; a plastic film manufacturing device that uses the sweeper roller; and a manufacturing method.
First claim
Opening claim text (preview).
The invention claimed is: 1. A sweeper roller for film production having spirally grooved surface comprising a plurality of spiral grooves, wherein the proportion of a surface area of the plurality of spiral grooves to a surface area of the sweeper roller is 30% or less, and the width of each of the plurality of spiral grooves measured in the axis direction of the sweeper roller is 25 mm or more. 2. A sweeper roller for film production as described in claim 1 , wherein the spiral grooves are separated on the surface of the sweeper roller at intervals of 100 mm or less in a rotation direction of the sweeper roller. 3. A sweeper roller for film production as described claim 1 , wherein the spiral grooves make an angle of 40° or more and less than 90° to a rotation direction of the sweeper roller. 4. A sweeper roller for film production as described in claim 1 wherein the plurality of spiral grooves exist in the surface of the sweeper roller with no crossings among the spiral grooves. 5. A plastic film production apparatus comprising a T-die, a cooling roller, and the sweeper roller for film production as described in claim 1 , wherein the T-die is positioned for discharging a molten resin on the cooling roller to form a molten resin film, and wherein the sweeper roller is positioned to come in contact with the molten resin while the molten resin is in contact with and is separated from the cooling roller.
Assignees
Inventors
Classifications
Operations & Transport · mapped topic
Operations & Transport · mapped topic
Rollers · CPC title
Operations & Transport · mapped topic
the rollers having specific surface features · CPC title
Patent family
Related publications grouped by family.
External sources
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US10150240B2 cover?
- A sweeper roller is provided for forming a film, the sweeper roller having helical grooves provided to the surface, wherein the ratio of the surface area of the helical groove portion is 30% or less of the surface area of the sweeper roller, and the width of the helical grooves in the axial direction of the sweeper roller is 25 mm or greater. Provided thereby are: a sweeper roller that does not…
- Who is the assignee on this patent?
- Toray Industries, Toray Industries
- What technology area does this patent fall under?
- Primary CPC classification B29C47/884. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Dec 11 2018 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).