Cooling and retaining pin for an apparatus for cooling and handling preforms made of plastic material
US-12157257-B2 · Dec 3, 2024 · US
Preform extrusion molding apparatus, method for extrusion molding, and preform
US10870245B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10870245-B2 |
| Application number | US-201916558381-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 3, 2019 |
| Priority date | Nov 17, 2011 |
| Publication date | Dec 22, 2020 |
| Grant date | Dec 22, 2020 |
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- Title
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- Abstract
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- First independent claim
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Abstract
Official abstract text for this publication.
A process includes: supplying a main resin from outer and inner flow channel, to a joined flow channel at a predetermined supply velocity for a predetermined time; supplying a second resin from a middle flow channel to the joined flow channel simultaneously with the main resin at a predetermined supply velocity for a certain time within the predetermined time; and sliding a shut-off pin to bring the pin forefront to a predetermined position near an outlet of the inner flow channel, open to the joined flow channel, before the second resin is supplied, or during a time starting after a time from the start of the second resin supply and ending with the termination of the supply, so that the velocity of main resin supply from the inner flow channel to the joined flow channel is reduced to a predetermined level by adjusting the degree of aperture for the outlet.
First claim
Opening claim text (preview).
The invention claimed is: 1. A preform in a test tube shape for biaxial stretching and blow molding use, in which a second-resin layer serving as an intermediate layer is laminated with main-resin layers that make up a shape of the preform, wherein a trailing edge of the second-resin layer is located (1) within a range from outside of an outer peripheral edge of a circular gate vestige formed in a center of a bottom plate of a bottom of the preform to a lower end of a corresponding inner peripheral surface of a body of the preform, and (2) at a distance of an average of 5 mm from the center of the bottom plate of the bottom of the preform, and wherein the second-resin layer is located closer to the inner peripheral surface of the preform than to the outer peripheral surface of the preform.
Assignees
Inventors
Classifications
partially · CPC title
Stretching rods · CPC title
using multilayered preforms or parisons · CPC title
Injection blow-moulding · CPC title
at bottom portion · CPC title
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US10870245B2 cover?
- A process includes: supplying a main resin from outer and inner flow channel, to a joined flow channel at a predetermined supply velocity for a predetermined time; supplying a second resin from a middle flow channel to the joined flow channel simultaneously with the main resin at a predetermined supply velocity for a certain time within the predetermined time; and sliding a shut-off pin to brin…
- Who is the assignee on this patent?
- Chiba Junichi, Shimizu Kazuhiko, Hosokoshiyama Hiroshi, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification B29B11/08. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Dec 22 2020 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).