Claims
- 1. In a method of making a thermoplastic bag, the steps comprising:
- (a) forming a thermoplastic tube having an opening at each end thereof, and front and rear walls;
- (b) sealing said openings;
- (c) forming a plurality of pleats in said front and rear walls, said pleats extending toward each of said sealed openings; and
- (d) removing a waste portion of each of said front and rear walls, said waste portions including an intermediate portion of one of said sealed ends and portions of said pleats to form a pair of spaced handle members and a mouth portion between said handle members with said pleats being located transverse to and confined to the lower inner portion of each of said handle members and said mouth portions immediately adjacent said lower inner portions of said handle members being confined to regions most susceptible to tearing.
- 2. The method of claim 1, wherein said pleats are formed by cold drawing said front and rear walls.
- 3. The method of claim 2, wherein said pleats are formed by stretching said front and rear walls about 10 percent to about 400 percent.
- 4. The method of claim 2, wherein said pleats are formed between a pair of grooved mating rollers.
CROSS-REFERENCE TO RELATED APPLICATIONS
This application is a divisional application of application Ser. No. 159,971, filed June 13, 1980, now U.S. Pat. No. 4,326,664, issued Apr. 29, 1982, which is a continuation-in-part application of application Ser. No. 20,899, filed Mar. 15, 1979, now abandoned.
US Referenced Citations (6)
Divisions (1)
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Number |
Date |
Country |
Parent |
159971 |
Jun 1980 |
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Continuation in Parts (1)
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Number |
Date |
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Parent |
20899 |
Mar 1979 |
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