Plastic bag with reinforced sides
A plastic bag includes a body having two sides. Each side of the body includes a corrugated portion having a layer unit with more than four layers. The load capacity of the plastic bag is increased due to reinforcement in structural strength at the sides by the corrugated portions. In preferred forms, the layer unit of each corrugated portion is interconnected to a bottom of the body. The layer unit of each corrugated portion has eight layers. The layer unit of each corrugated portion includes a recessed portion located inside of the body and having two sections contiguous to each other. Each section has four layers.
The present invention relates to a plastic bag and, more particularly, to a plastic bag with reinforced sides by corrugated portions.
Plastic bags are widely used in daily lives for various purposes including receiving articles, garbage, etc. The structural strength of plastic bags is often limited by their material in view of costs and, thus, has a limited load capacity. Although officially discouraged from the environmental and ecological aspects, use of plastic bags for carrying articles is inevitable.
Thus, a need exists for a plastic bag with reinforced sides for supporting purposes.
BRIEF SUMMARY OF THE INVENTIONThe present invention solves this need and other problems in the field of plastic bag structure by providing, in a preferred form, a plastic bag including a body having two sides. Each side of the body includes a corrugated portion having a layer unit with more than four layers. The load capacity of the plastic bag is increased due to reinforcement in structural strength at the sides by the corrugated portions.
In preferred forms, the layer unit of each corrugated portion is interconnected to a bottom of the body. The layer unit of each corrugated portion has eight layers. The layer unit of each corrugated portion includes a recessed portion located inside of the body and having two sections contiguous to each other. Each section has four layers.
In a preferred form, each section has W-shaped cross sections. In another preferred form, each section includes a plurality of folds.
The present invention will become clearer in light of the following detailed description of illustrative embodiments of this invention described in connection with the drawings.
The illustrative embodiments may best be described by reference to the accompanying drawings where:
All figures are drawn for ease of explanation of the basic teachings of the present invention only; the extensions of the figures with respect to number, position, relationship, and dimensions of the parts to form the preferred embodiments will be explained or will be within the skill of the art after the following teachings of the present invention have been read and understood. Further, the exact dimensions and dimensional proportions to conform to specific force, weight, strength, and similar requirements will likewise be within the skill of the art after the following teachings of the present invention have been read and understood.
DETAILED DESCRIPTION OF THE INVENTIONWith reference to
The layer unit 221 of each corrugated portion 22 is interconnected to a bottom of the body 21 by such as pressing. Corrugation is formed on each of the sides of the body 21 along the line of pressing. In use, the sides of the body 21 may deform due to the sizes of the articles received in the body 21. However, the boy 21 is less likely to deform at the portion of adjacent the bottom. Thus, the structural strength of the boy 21 at the sides and the bottom is enhanced.
In the preferred form shown in
In another preferred form shown in
With reference to
Thus since the invention disclosed herein may be embodied in other specific forms without departing from the spirit or general characteristics thereof, some of which forms have been indicated, the embodiments described herein are to be considered in all respects illustrative and not restrictive. The scope of the invention is to be indicated by the appended claims, rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are intended to be embraced therein.
Claims
1. A plastic bag comprising:
- a body including two sides each having a corrugated portion, with each of the corrugated portions including a layer unit having more than four layers.
2. The plastic bag as claimed in claim 1, with the body further including a bottom, and with the layer unit of each of the corrugated portions interconnected to the bottom of the body.
3. The plastic bag as claimed in claim 1, with the layer unit of each of the corrugated portions having eight layers.
4. The plastic bag as claimed in claim 3, with the layer unit of each of the corrugated portions including a recessed portion located inside of the body and having two sections contiguous to each other, and with each of the two sections having four layers.
5. The plastic bag as claimed in claim 4, with each of the two sections having W-shaped cross sections.
6. The plastic bag as claimed in claim 3, with the layer unit of each of the corrugated portions including a recessed portion located inside of the body and having two sections contiguous to each other, with each of the two sections including four layers having a plurality of folds.
Type: Application
Filed: Aug 17, 2009
Publication Date: Feb 17, 2011
Inventor: Yi-Min Chen (Kaohsiung City)
Application Number: 12/461,562
International Classification: B65D 33/02 (20060101); B65D 30/20 (20060101);