Crown of waterproof cap
OwnerTung-Hua Taiinventor
Life of this patent
Estimating the term…
Abstract
The present invention is aimed to provide a crown for waterproof cap. The crown (20) consists of six panels (21˜26), inside the crown there are diagonal seams (27) intersected. These seams can be sealed by stickers (41˜43) contain thermoplastic membrane (40). Whereby the seams are connected with panels (21˜26) to achieve waterproof effects. In manufacturing, high frequency circular wheel cuts and melts between panels (21˜26), leftovers cut off and thrown out, piled sides of panels are welded to form a seam (27). Stickers contain thermoplastic membrane can be heated inside the crown between two adjacent panels, where a roller rolls over to press down the sticker to cover up the seams. Thereby, a crown is completed.
Claims4
A method for manufacturing said crown for waterproof cap includes following step:
- (a) cut out the six panels (21˜26) made of synthetic fibers, each panel has an overall triangular shape with both left and right sides are slightly arched with a flat bottom side in between;
- (b) two adjacent panels piled to the sides, which are welded together by a high frequency plastic welding machine further equipped with a circular cutter (50) to cut off leftovers (51) immediately, after cutting, left piled sides melt together to form a seam (27);
- as the six panels (21˜26) are assembled together to form a crown (20), three diagonal seams (27) formed on an inner surface of the crown;
- (c) stickers (41˜43) contain thermoplastic membrane (40), which is heated by hot air to melt together to the stickers (41˜43), and then the stickers (41˜43) are pressed along the diagonal seams (27) inside the crown (20);
- each of the stickers (41˜43) are added to cover up each seam between two adjacent panels to seal the seams (27), thus the waterproof crown (20) is shaped with reduced seams and stitches.
Dependencies are inferred from the claim text.