Deodorizing and disinfecting liquid-absorbing product and process for production thereof

• US 4,363,322 A
• Filed: 04/12/1979
• Issued: 12/14/1982
• Est. Priority Date: 04/13/1978
• Status: Expired due to Term

• Current Assignee: Bror A.E. Andersson
• Original Assignee: Bror A.E. Andersson
• Inventors: Andersson, Bror A. E.
• Primary Examiner(s): ROSENBAUM, C FRED
• Application Number:
  US06/029,433
• Time in Patent Office: 1,342 Days
• Field of Search: 128/155-156, 128/284-287, 128/290, 128/296, 423/415 R, 423/415 P, 423/385, 423/387, 423/579, 252/186, 8/101, 8/111, 8/137
• US Class Current: 604/359
• CPC Class Codes: A61F 13/01029 made of multiple layers
• CPC Class Codes: A61F 13/20 Tampons, e.g. catamenial tampons; Accessories therefor
• CPC Class Codes: A61F 13/534 having an inhomogeneous composition through the thickness of the pad A61F13/538, A61F13/539 take precedence; homogeneous cores with tissue wrapping A61F13/53
• CPC Class Codes: A61F 13/58 Adhesive tab fastener elements A61F13/5611, A61F13/5616, A61F13/66 take precedence
• CPC Class Codes: A61F 13/8405 Additives, e.g. for odour, disinfectant or pH control
• CPC Class Codes: A61F 2013/0017 possibility of applying fluid
• CPC Class Codes: A61F 2013/00731 with absorbing pads
• CPC Class Codes: A61F 2013/00842 for tearing off dressing of desired size
• CPC Class Codes: A61F 2013/00914 with deodorising or perfuming means
• CPC Class Codes: A61F 2013/5055 Possibility of doubling or putting in new pieces
• CPC Class Codes: A61F 2013/51409 being a film
• CPC Class Codes: A61F 2013/53445 from several sheets
• CPC Class Codes: A61F 2013/582 with one strip on one place
• CPC Class Codes: A61L 15/46 Deodorants or malodour counteractants, e.g. to inhibit the formation of ammonia or bacteria
• CPC Class Codes: A61L 2300/11 Peroxy compounds, peroxides, e.g. hydrogen peroxide
• CPC Class Codes: A61L 2300/404 Biocides, antimicrobial agents, antiseptic agents

Abstract

Deodorizing and disinfecting liquid-absorbing product, such as a sanitary napkin, a compress or a diaper, comprising a liquid absorbing material and inside the product at a distance from its outer edges a substance, which gives off oxygen in contact with moisture. A liquid-absorbing product into which can be inserted an insert such as a deodorizing strip or powder which gives off oxygen when in contact with moisture, which product is divided into essentially identical essentially rectangular or square pad-formed parts joined together by a thin flexible joint in such a manner that the parts can be placed on top of one another by folding the joint and then forming the product in the form in which it is to be used. A process for production of the two-part liquid-absorbing product by forming two thin, essentially square or rectangular pads, laying the pads side by side with two sides parallel and with a gap between them on a web of jacket material with the gap parallel to the longitudinal direction of the web, the width of the web being somewhat larger than the circumference around the pads laying side by side, folding the web lengthwise around the outer edges of the pads and joining the edges of the web on top of one pad so that the pads will lie enclosed by a sleeve, cutting off the web on either side of the pads, joining the two layers of jacket material in the gap between pads by glueing or fusing and either forming a seam in the jacket ends outside the pads in the plane of the pads or folding the product along the gap and laying the pads on top of each other and then forming a flat seam in the four layers of jacket material outside the pads along the intermediate surface between the pads or tying the jacket layers in a knot on each side of the pads.

Claims

1. Liquid-absorbing product, which is designed to be able to be provided with an insert or filler of a material which gives off oxygen in moisture, said product having the form of an essentially rectangular or square pad and comprising one or more layers of absorbent material, and a thin jacket around this material, characterized in that the product is divided into two essentially identical, essentially rectangular or square parts of a thickness less than that of the product, which are joined along one side of each part by a thin flexible joint in such a manner that the parts can be placed on top of one another by folding the joint and then form the product in the form in which it is to be used, and the material which gives off oxygen in moisture is in direct contact with the absorbent material.

2. Product according to claim 1, characterized in that the joint is made of the same material as the jacket.

3. Product according to claim 2, characterized in that the joint is an integral part of the jacket, and the product, when the parts lie side-by-side with the joint stretched, being made up of two thin pads enclosed together by the jacket in the form of a sleeve, the joint being formed by two jacket layers between the pads, said layers possibly being joined together, as by fusing or gluing.

4. Product according to claim 1, characterized in that the two parts have different thicknesses and that the thinner part consists of a jacket and inside the jacket an easily permeable hydrophobic material along the outer surface of the product, one or more spreading layers and possibly a thin layer of absorbent material against the inner surface of the part, and that the thicker part consists of a jacket and inside the jacket a hydrophilic absorbing material, possibly a spreading layer, and a hydrophobic layer along the outer surface of the part and outside the jacekt, along the outer surface possibly an impermeable layer and/or an anti-slip layer.

5. Product according to claim 1, characterized in that one or both of the parts, on the surface which is to face the other part, is provided with an easily permeable anti-slip layer or strip.

6. Product according to claim 1, characterized in that the jacket extends in the direction of the joint outside the absorbent material.

7. Product according to claim 6, characterized in that the portion of the jacket which lies outside the absorbent material, is joined together by gluing or fusing into a seam perpendicular to the joint, the seam either being made with the parts lying side-by-side in the plane of the parts or with the parts laid together so that the seam formed will hold together the parts on top of each other.

8. Product according to claim 6, characterized in that the jacket extending outside the absorbent material is tied on either side of the absorbent material with the two parts laid on top of each other so that the knots will be opposite the middle line of the end side of the product.

9. Process for the manufacture of a liquid-absorbing product according to claim 1, in the form of an essentially rectangular or square pad, said product comprising a jacket and one or more layers of absorbent material laid on top of one another, the product being made up of two essentially identical essentially rectangular or square parts of less thickness than the product, said parts being joined along one side of each part by a thin flexible joint, whereby the parts can be placed on top of each other by folding the joint and then form the product in the form it is to be used, characterized in that two thin, essentially square or rectangular pads are formed, which consist of the layers which are to be inside the jacket in the finished product, that the pads are laid side-by-side with two sides parallel and with a gap between them on a web of jacket material in such a way that the gap is parallel to the longitudinal direction of the web, the width of the web being somewhat larger than the circumference around the pads lying side-by-side, that the web is folded lengthwise tightly around the outer edges of the pads and that the edges of the web are joined together on top of one pad so that the pads will lie enclosed by a sleeve of the web, that the web is cut off on either side of the pads, whereupon the four layers of jacket material which will then lie on top of each other outside of the pads are joined together into a flat seam along the intermediate surface between the pads or are tied together into knots.

10. Process according to claim 9, characterized in that after joining the jacket into a sleeve, a strip or a layer of anti-slip material is fastened to a surface of the jacket which is to face the inside of the product.