Claims
- 1. A method for constructing an improved ice pack comprising the steps of:
- positioning in overlapping relation first and second strips of three ply material of the type having an inner layer of waterproof material, an intermediate layer of absorbent material and an outer layer of absorbent material perforated by a number of tiny holes;
- ultrasonically welding said first and second strips together along two sides thereof and along one end thereof to form an envelope;
- ultrasonically welding said first and second strips together interiorly of said envelope to form a bag member being open at the open end of said envelope and closed on all other sides;
- cutting out a portion of said material outside of the closed end of said envelope such that a pair of tie strings are formed internally of the edges of said envelope in parallel relation therewith; and
- cutting out a portion of said material adjacent said open end to form a pair of tie strings extending from the open end of the envelope coincident with the sides thereof.
- 2. The method of claim 1 further comprising the step of:
- sonically welding the edges of the bag member adjacent the open end of the envelope such that said bag member diverges outwardly at a selected angle.
Parent Case Info
This is a divisional of application Ser. No. 184,466 filed Sept. 5,1980, now Pat. No. 4,347,848.
US Referenced Citations (6)
Divisions (1)
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Number |
Date |
Country |
Parent |
184466 |
Sep 1980 |
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