# How to Make Waste-Free Plastic Grocery Bags on a Roll

> A design for plastic grocery bags on a roll that eliminates leftover scrap material during manufacturing while allowing users to easily tear off and open handles.

- **Patent:** US 12043450
- **Original title:** Roll of separable bags and method of manufacture
- **Owner:** Inteplast Group Corp
- **Granted:** 2024
- **Status:** Active
- **Times cited:** 0
- **Field:** mechanical, consumer_electronics, materials

## What it does

This patent describes a specific way to cut and seal plastic film to create a roll of grocery bags. By using a precise arrangement of seals and perforation lines, the design ensures that no excess plastic is left behind when a bag is separated from the roll. The key mechanism involves a handle perforation line that intersects with bag-separating perforations in a specific geometric pattern. This allows a user to pull a bag off the roll and then tear along the handle lines to create functional carrying loops without needing to discard extra plastic tabs.

## What it does NOT cover

- Does not cover bags that require cutting with scissors or blades to open.
- Does not cover bags manufactured using a die-cutting process that produces scrap material.
- Does not cover bags where the handle is already fully formed and separated during the initial manufacturing stage.
- Does not cover bags that do not utilize a roll-based dispensing format.

## The clever bit

The innovation lies in the specific intersection geometry of the handle perforation lines and the bag-separating lines. By carefully placing these lines to cross the seals, the design allows the bag to remain structurally sound while on the roll but easily transformable into a handled bag by the end user.

## Real-world examples

1. Standard plastic grocery bags found at supermarket checkout lanes
2. High-density polyethylene (HDPE) produce bags on rolls

## Why it matters

In high-volume manufacturing, even small amounts of scrap plastic add up to significant waste and increased production costs. By eliminating the need for scrap removal, this design improves material efficiency and streamlines the production line. It is a practical refinement for the commodity plastic bag industry, focusing on sustainability and cost-reduction at scale.

## Frequently asked questions

### What does How to Make Waste-Free Plastic Grocery Bags on a Roll cover?

A design for plastic grocery bags on a roll that eliminates leftover scrap material during manufacturing while allowing users to easily tear off and open handles.

### Who owns patent US 12043450?

Inteplast Group Corp owns this patent, granted in 2024.

### When does this patent expire?

This patent is expected to expire on July 23, 2044, when the invention enters the public domain.

### What problem does this patent solve?

In high-volume manufacturing, even small amounts of scrap plastic add up to significant waste and increased production costs. By eliminating the need for scrap removal, this design improves material efficiency and streamlines the production line. It is a practical refinement for the commodity plastic bag industry, focusing on sustainability and cost-reduction at scale.

### What does this patent NOT cover?

Does not cover bags that require cutting with scissors or blades to open.

**Full plain-English explainer:** https://patentbrief.org/patent/us/12043450/starship-radiation-protection

**Original patent:** https://patents.google.com/patent/US12043450

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_Source: PatentBrief — https://patentbrief.org. Patent facts are from public records; the plain-English explanation is PatentBrief's._