Multilayer heat-shrinkable styrene-based film and method for producing the same
US-9845386-B2 · Dec 19, 2017 · US
Heat-shrinkable multilayer film and heat-shrinkable label
US2017190158A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2017190158-A1 |
| Application number | US-201415325298-A |
| Country | US |
| Kind code | A1 |
| Filing date | Aug 29, 2014 |
| Priority date | Aug 29, 2014 |
| Publication date | Jul 6, 2017 |
| Grant date | — |
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.
The present invention provides a heat shrinkable multilayer film which has excellent adhesiveness between front and back layers and an interlayer not only at normal temperature but also at low temperature to effectively prevent delamination and is less likely to have residual white streaks along creases. The present invention also provides a heat shrinkable label including the heat shrinkable multilayer film. The present invention relates to a heat shrinkable multilayer film including: front and back layers each containing a polyester resin; an interlayer containing a polystyrene resin; and adhesive layers, the front and back layers and the interlayer being stacked with the adhesive layers interposed therebetween, the adhesive layers each containing 20 to 65% by weight of a polystyrene resin and 35 to 80% by weight of a polyester elastomer.
First claim
Opening claim text (preview).
1 . A heat shrinkable multilayer film comprising: front and back layers each containing a polyester resin; an interlayer containing a polystyrene resin; and adhesive layers, the front and back layers and the interlayer being stacked with the adhesive layers interposed therebetween, the adhesive layers each containing 20 to 65% by weight of a polystyrene resin and 35 to 80% by weight of a polyester elastomer. 2 . The heat shrinkable multilayer film according to claim 1 , wherein the polystyrene resin contained in the adhesive layers is an aromatic vinyl hydrocarbon-conjugated diene copolymer. 3 . The heat shrinkable multilayer film according to claim 1 , wherein the polyester elastomer contained in the adhesive layers has a melting point of 120° C. to 200° C. 4 . The heat shrinkable multilayer film according to claim 1 , wherein the polyester elastomer contained in the adhesive layers has a specific gravity of 0.95 to 1.20. 5 . The heat shrinkable multilayer film according to claim 1 , wherein the polyester elastomer contained in the adhesive layers is modified by an α,β-ethylenically unsaturated carboxylic acid. 6 . A heat shrinkable label, comprising the heat shrinkable multilayer film according to claim 1 .
Assignees
Inventors
Classifications
Shrinkable · CPC title
of synthetic resin · CPC title
Printability · CPC title
Flexural strength; Flexion stiffness · CPC title
Thermoformability · 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 US2017190158A1 cover?
- The present invention provides a heat shrinkable multilayer film which has excellent adhesiveness between front and back layers and an interlayer not only at normal temperature but also at low temperature to effectively prevent delamination and is less likely to have residual white streaks along creases. The present invention also provides a heat shrinkable label including the heat shrinkable m…
- Who is the assignee on this patent?
- Gunze Kk
- What technology area does this patent fall under?
- Primary CPC classification B32B27/302. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Thu Jul 06 2017 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 7 related publications on this page (citations in our corpus or others sharing the same primary CPC).