Delamination container and preform
US-2019031386-A1 · Jan 31, 2019 · US
Apparatus for producing resin molded article, method for producing resin molded article, and resin molded article
US12290970B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12290970-B2 |
| Application number | US-202017620991-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 26, 2020 |
| Priority date | Jun 28, 2019 |
| Publication date | May 6, 2025 |
| Grant date | May 6, 2025 |
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 production apparatus of a two-layer preform including an inner layer preform and an outer layer preform includes: an outer layer cavity mold for injection-molding the outer layer preform. A bottom surface of the outer layer cavity mold is provided with a protrusion for separating the inner layer preform disposed in the outer layer cavity mold from the bottom surface.
First claim
Opening claim text (preview).
The invention claimed is: 1. A production apparatus of a two-layer preform including an inner layer preform and an outer layer preform, the apparatus comprising: a first injection molding unit configured to injection-mold the inner layer preform with a first resin material; a second injection molding unit configured to internally accommodate the inner layer preform that is injection molded in the first injection molding unit and injection-mold the outer layer preform on the outside of the inner layer preform with a second resin material having a lower melting point than the first resin material, and a neck mold that molds a neck portion of the preform, wherein the first injection molding unit has a first injection core mold applied to injection molding of the inner layer preform, the second injection molding unit has a second injection core mold applied to injection molding of the inner layer preform and is different from the first injection core mold, and an outer layer cavity mold for injection-molding the outer layer preform, a bottom surface of the outer layer cavity mold is provided with a protrusion for separating the inner layer preform disposed in the outer layer cavity mold from the bottom surface, and the inner layer preform is supported by the neck mold and conveyed to the second injection molding unit. 2. The production apparatus of the two-layer preform according to claim 1 , wherein a shape of a mold surface of the neck mold when the inner layer preform is injection-molded is different from a shape of the mold surface when the outer layer preform is injection-molded. 3. The production apparatus of the two-layer preform according to claim 1 , wherein an abutting surface which is narrowed around an axis of the inner layer preform and abuts on the outer layer preform is formed between a neck portion and a body portion of the inner layer preform.
Assignees
Inventors
Classifications
Moulds · CPC title
using multilayered preforms or parisons · CPC title
the layers being loose · CPC title
shaping the first molding material before injecting the second molding material, e.g. by cutting, folding · CPC title
Coating tubular articles · 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 US12290970B2 cover?
- A production apparatus of a two-layer preform including an inner layer preform and an outer layer preform includes: an outer layer cavity mold for injection-molding the outer layer preform. A bottom surface of the outer layer cavity mold is provided with a protrusion for separating the inner layer preform disposed in the outer layer cavity mold from the bottom surface.
- Who is the assignee on this patent?
- Nissei Asb Machine Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification B29C49/071. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue May 06 2025 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).