FIELD: methods and devices for production of nonwoven plastic films. SUBSTANCE: perforated plastic film including many protrusions and inclined side walls coming from protrusions and many clusters of irregular microholes formed by net of fibrous members. Each cluster of irregular microholes are tied by at least two inclined side walls. Film also includes many rows of wavy seams system of protrusions tied with opposite sides of seams and coming in direction from seams. Films are useful as covering material for absorption of product moisture, such as towels, bandages on wounds and hygienic filter cloths. EFFECT: production of film similar to jersey. 30 cl, 13 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| PERFORATED FILM AND ITS FORMATION PROCESS | 1992 |
|
RU2126672C1 |
| PERFORATED FILM POSSESSING IMPROVED PROPERTIES FOR DISTRIBUTING LIQUID, METHOD FOR PRODUCING THE FILM AND ABSORBING PRODUCTS HAVING THIS FILM | 1996 |
|
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| NONWOVEN FABRIC | 1995 |
|
RU2149229C1 |
| METHOD FOR PRODUCING IMPROVED PERFORATED FILMS, PERFORATED FILMS AND PRODUCTS PRODUCED FROM ADSORBENTS AND CONTAINING THE PRODUCED PERFORATED FILMS | 1996 |
|
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| THREE-DIMENSIONAL APERTURED FILM | 2005 |
|
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| ABSORBENT PRODUCT MASKING STAINS | 2005 |
|
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| PERFORATED NONWOVEN GLUED MATERIAL | 2000 |
|
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| ABSORBING PRODUCT STABLE TO SOILING | 2007 |
|
RU2422122C2 |
| LASER DRILLING PROCESSES FOR MAKING APPARATUSES FOR FORMING MATERIALS AND FILMS | 1996 |
|
RU2151036C1 |
| TWO-LAYER STRUCTURE FOR ABSORBING MATERIAL | 2004 |
|
RU2369407C2 |
