Method for producing polyethylene-based resin laminated foam sheet, polyethylene-based resin laminated foam sheet, and interleaf for glass plate using thereof
US-10465057-B2 · Nov 5, 2019 · US
Process for producing laminated foam sheet and extruded laminated foam sheet
US2022016873A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2022016873-A1 |
| Application number | US-202117490175-A |
| Country | US |
| Kind code | A1 |
| Filing date | Sep 30, 2021 |
| Priority date | Feb 4, 2019 |
| Publication date | Jan 20, 2022 |
| Grant date | — |
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- Title
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Abstract
Official abstract text for this publication.
A laminated foam sheet having a polyethylene resin foam layer and an antistatic polyethylene layer laminated on one or both sides thereof is produced by coextruding melts for respective layers, wherein the melt for the antistatic layer contains a polyethylene resin, an ionomer resin antistatic agent and a specific amount of volatile plasticizer blend containing an alcohol and a saturated hydrocarbon or a dialkyl ether. The antistatic layer of the obtained laminated foam sheet has specific morphology.
First claim
Opening claim text (preview).
What is claimed is: 1 . A process for producing a laminated foam sheet having a polyethylene-based resin foam layer and a polyethylene-based resin antistatic layer laminated on at least one side of the foam layer, comprising the steps of: providing a first melt containing a polyethylene-based resin (PE-1) and a physical blowing agent, providing a second melt containing a polyethylene-based resin (PE-2), an ionomer resin as a polymeric antistatic agent and a volatile plasticizer, and coextruding the first and second melts to form the laminated foam sheet in which the polyethylene-based resin foam layer and the polyethylene-based resin antistatic layer are formed from the first and second melts, respectively, wherein the volatile plasticizer is composed of a blend of a component (A) which is at least one alcohol having a boiling point of 120° C. or less and a component (B) which is at least one selected from the group consisting of saturated hydrocarbons having 3 to 5 carbon atoms and dialkyl ethers in which each alkyl has 1 to 3 carbon atoms, wherein a molar ratio of the component (A) to the component (B) is 5:95 to 95:5, and wherein the volatile plasticizer is present in the second melt in an amount of 0.1 to 10 mols per kg of the total weight of the polyethylene-based resin (PE-2) and the ionomer resin. 2 . The process according to claim 1 , wherein the ionomer resin is present in the second melt in an amount of 1 to 80% by weight based on the total weight of the polyethylene-based resin (PE-2) and the ionomer resin. 3 . The process according to claim 1 , wherein the component (A) contains ethanol in an amount of 50% by weight or more based on the weight of the component (A). 4 . The process according to claim 1 , wherein the component (A) is present in the second melt in an amount of 1 to 25 mols per kg of the ionomer resin. 5 . The process according to claim 1 , wherein the ionomer resin has a melt flow rate of 3 g/10 min or less at a temperature of 190° C. and a load of 2.16 kg. 6 . The process according to claim 1 , wherein the polyethylene-based resin (PE-2) has a melt flow rate of 1 to 20 g/10 min at a temperature of 190° C. and a load of 2.16 kg. 7 . The process according to claim 1 , wherein the laminated foam sheet has an apparent density of 20 to 200 kg/m 3 .
Assignees
Inventors
Classifications
Making multilayered articles · CPC title
Polyethylene · CPC title
- B32B27/065Primary
of foam · CPC title
Ionomers · CPC title
Resin or rubber layer containing a blend of at least two different polymers · CPC title
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- What does patent US2022016873A1 cover?
- A laminated foam sheet having a polyethylene resin foam layer and an antistatic polyethylene layer laminated on one or both sides thereof is produced by coextruding melts for respective layers, wherein the melt for the antistatic layer contains a polyethylene resin, an ionomer resin antistatic agent and a specific amount of volatile plasticizer blend containing an alcohol and a saturated hydroc…
- Who is the assignee on this patent?
- Jsp Corp
- What technology area does this patent fall under?
- Primary CPC classification B32B27/065. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Thu Jan 20 2022 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 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).