Side shot system, method, and tote manufactured therefrom

Patent metadata

Field	Value
Publication number	US-11938666-B2
Application number	US-202017085460-A
Country	US
Kind code	B2
Filing date	Oct 30, 2020
Priority date	Oct 30, 2019
Publication date	Mar 26, 2024
Grant date	Mar 26, 2024

Abstract

A storage container manufactured from an injection molding process which includes a mold and at least one injector. The mold has a top surface, a bottom wall, a plurality of side surfaces, and at least two separable sections. Where the at least two separable sections are in a closed position, a cavity is formed in the mold. The at least one injector is disposed through at least one of the plurality of sidewalls and further disposed into the cavity. The storage container has a plurality of sidewalls, an upper edge, and a bottom surface. At least one of the plurality of sidewalls of the resulting storage container contains at least one sprue mark.

First claim

What is claimed is:

1. A method for manufacturing a storage container with an injection molding process, the method comprising the steps of:
providing a mold having a top wall, a bottom wall, and a plurality of side surfaces, the plurality of side surfaces includes a first side surface, a second side surface, a third side surface, and a fourth side surface, the mold includes two sections, wherein the mold is in a closed position, a cavity is formed between the two sections, the mold further includes a plurality of injectors directed into the cavity when the mold is in the closed position, the plurality of injectors including a first pair of injectors disposed through the first side surface and a second pair of injectors disposed through the second side surface;
providing a molten material;
positioning the plurality of injectors along the plurality of side surfaces at a desired height and a desired lateral position to achieve a balanced fill of the cavity;
injecting the molten material through the plurality of injectors disposed through the plurality of side surfaces of the mold into the cavity and not through the bottom wall; and
removing the manufactured storage container from the mold.

2. The method of claim 1 , wherein the injection molding process has a total production time which is the time required to form the storage container, where the total production time of the storage container is about 55% less than a total production time of the storage container formed by the injection molding process but where the molten material is injected only at the bottom surface of the storage container.

3. The method of claim 1 , wherein the injection molding process has a fill time which is the time required to fill the cavity to form the storage container, wherein the fill time is between 2.5 seconds and 4.0 seconds.

4. The method of claim 1 , wherein the injection molding process includes injecting the molten material at a temperature between 350° F. and 550° F.

5. The method of claim 1 , wherein the injection molding process has a clamp force pressure which is the pressure required to hold a mold in a closed position to form the storage container during the injection molding process, where the clamp force pressure is about 25% less than a clamp force required to form the storage container by the injection molding process but where the molten material is injected only at a bottom surface of the storage container.

6. The method of claim 1 , wherein the plurality of injectors further includes an injector disposed through the third side surface and another injector disposed through the fourth side surface.

7. The method of claim 1 , wherein the first sidewall and the second sidewall each have a first length, the third sidewall and the fourth sidewall each have a second length, and the first length is longer than the second length.

Assignees

• Creative Plastic Concepts Llc

Inventors

• Whitta Jacob H
• Hummel Eric

Classifications

• B29C45/2708 Primary

  Gates (B29C45/2703 takes precedence) · CPC title

• B29C45/7653

  mould clamping forces · CPC title

• B29C45/78

  of temperature · CPC title

• B65D1/22 Primary

  Boxes or like containers with side walls of substantial depth for enclosing contents {(B65D43/162, B65D81/02, B65D81/3813 take precedence)} · CPC title

• B29C2045/2716

  The gate axis being perpendicular to main injection axis, e.g. injecting into side walls of a container · CPC title