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US 5,667,307 AGranted
Article holding bag of non-woven fabric and a method for making the same
OwnerHua Tsung Chiuinventor
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Abstract
A method for making an article holding bag of a non-woven fabric material involves impregnating the non-woven fabric material in an aqueous solution containing 25-80% by weight of water and 75-20% by weight of a resin mixture composed of polyacrylic acid and polyurethane in a weight ratio ranging between 2:1 and 1:4. Thereafter, the impregnated non-woven fabric is removed and dried by baking. The dried non-woven fabric is laminated and is then subject to a high frequency plastic welding to make the article holding bag.
Claims6
A method of making an article holding bag of a non-woven fabric material, said method comprising the steps of:
- (a) preparing an aqueous solution containing 25-80% by weight of water and 75-20% by weight of a resin mixture composed of polyacrylic acid and polyurethane in a weight ratio ranging between 2:1 and 1:4;
- (b) impregnating a non-woven fabric material in said aqueous solution;
- (c) removing the impregnated non-woven fabric material from said aqueous solution and then drying said impregnated non-woven fabric material by baking;
- and
- (d) forming an article holding bag by high frequency plastic welding a two-layer laminate of the dried non-woven fabric material.
2 more elements
Dependencies are inferred from the claim text.