EP-4478916-B1 - PRODUCTION METHOD FOR A BABY COVER

Inventors

• ÜSTÜN AYDIN, Hüner

Dates

Publication Date

20260506

Application Date

20231219

Claims (9)

1. A production method for a baby cover which has a fever indicator and provides a cooling and refreshing effect to the baby, characterized in that it comprises the steps of: a. production of a carded, thermobonded nonwoven surface layer obtained from synthetic staple, regenerated, bicomponent or natural fibers and impregnation of the surface with microcapsules capable of producing a cooling and refreshing effect when they burst following contact with the baby's body, using foulard method, b. production of a thermochromic indicator-printed breathable polyethylene film derived from sugar cane, or a breathable PLA or PBAT biofilm, produced using blown film technology and machine direction orientation, c. combining the surface of step a and the film of step b by a lamination process.
2. The production method for a baby cover according to claim 1, characterized in that the thermobond nonwoven production comprises the steps of: • pre-opening of fibers (1) with different cross-sections and structures in the fiber opening unit (2), • mixing the opened fibers (1) with aeration in the feeding unit (3), • carding of the fibers (1) by means of cylinders and drums, • combining of the carded fibers (1) in the bonding unit (6) and calendering in the calender unit (5) at high temperature and pressure, • fixing the calendered fibers (1) through thermal welding points to obtain the thermobond non-woven surface.
3. The production method for a baby cover according to claim 1, characterized in that the foulard method comprises the steps of: • transferring the non-woven surface to the foulard tank (8) with the immersion cylinder (7) and immersing it in the liquid containing the microcapsules, • removing the excess liquid on the surface with a mangle cylinder (9) and drying the surface.
4. The production method for a baby cover according to claim 1, characterized in that production of film of step b comprises the steps of: • melting the polyethylene and raw materials in the extruder, mixing them, passing them through the film blowing head, cooling, stretching and solidifying, • providing the film with breathing properties by opening the micropores in the film as the solidified film enters the elastomerization and orientation unit in the machine production direction.
5. The production method for a baby cover according to claim 4, characterized in further comprises step of thermochromic indicator-printing selected from rotogravure and flexo printing method.
6. The production method for a baby cover according to claim 5, characterized in that rotagravur printing method comprises, t filling the prepared indicator into the indicator chamber (10) and transferring it to the film surface by pouring indicator onto the cliché plate cylinders (11).
7. The production method for a baby cover according to claim 5, characterized in that flexo printing method comprises steps of; mounting the cliché plate on mould cylinder, rotating anilox in the indicator chamber (10),loading the indicator into cell pits of the anilox and and applying the indicator printing process to the surface between the gravure cylinder (14) and the cliché plate cylinder (11).
8. The production method for a baby cover according to claim 1, characterized in that the lamination process is applied with hot-melt rubber-based adhesive.
9. A baby cover obtainable by the method according to one of claims 1 to 8.

Description

Technical Field The invention is related to the production method for a baby cover containing a breathable film laminated with a nonwoven, which visually indicates the increase in body temperature in babies to parents through the thermochromic indicator on its surface and provides a refreshing effect to babies with the help of microcapsules. State of the Art In particular, newborn babies and children in their first year can get fever for a variety of reasons. In the present art, the cover materials used for babies during fever are usually produced using the spunlace (water jet) method. Nonwoven surfaces produced by the spunlace method are textile surfaces obtained by entangling the fibers forming the nonwoven surface with pressurized water which is used in the production of wet wipes and disposable medical textile products. However, the spunlace method causes lamination problems. In addition, the present art lacks microcapsule support. The products are only laminated with pure nonwovens. A search of the present art revealed the application no. TR2013/08704. The application relates to an embodiment of a baby blanket that provides thermal insulation. The embodiment of the blanket/cover comprises a protective outer layer, a silicone layer for thermal insulation and a closure arrangement. However, the application does not include a non-woven thermal bonded baby cover containing a laminated breathable film and microcapsules. A baby cover suitable for cooling a baby in order to provide relief from a fever is disclosed in CN 208 657 990 U. As a result, due to the above-mentioned drawbacks and the shortcomings of the existing solutions, a development in the relevant technical field is required. The Object of the Invention The invention is inspired by existing situations and aims to solve the above-mentioned problems. The main object of the invention is to refresh the baby with the baby cover obtained by a method comprising a step of laminating a thermobonded nonwoven surface layer comprising microcapsules with a breathable film, and to visually indicate the body temperature of the baby to the parents through the thermochromic indicator, as defined in claim 1. Further embodiments are defined in the dependent claims. The object of the invention is to provide a thermobonded and carded baby cover with a silk, soft and coolness effect, which has an increased breathing capacity with a nonwoven surface, as defined in claim 9. The object of the invention is to ensure contact and data acquisition from more spots by increasing the printing area and effectiveness of the thermochromic indicator. In the invention, instead of nonwoven surface layers produced with water jet, a thermbonded and carded nonwoven surface layer is used, which is more rigid, smooth, does not reduce the breathing capacity of the film and provides a soft and silk effect. In addition, functionality is increased by impregnating the nonwoven surface with microcapsules for breath easy and refreshing. The invention provides a baby cover with increased breathing capacity as well as an increased printing area of the thermochromic indicator. The invention is made entirely from bio-based materials. The baby cover according to the invention comprises low-density polyethylene (LDPE) and is derived from renewable sugar cane. LDPE is a 100% recyclable and compostable eco-friendly resource that absorbs carbon dioxide from the atmosphere. According to the invention the baby cover can also be produced from biopolymers containing completely biodegradable PLA and PBAT. The invention used MDO (Machine Direction Orientation) technology for breathability. With this technology, during the polyethylene film production process, the polyethylene film is stretched longitudinally by passing it through a machine, thus making the film more durable, stronger and with a smooth surface structure. MDO technology also enables the production of thinner and lighter products (films) during film production. In this way, environmentally friendly and economical production can be achieved in the film industry. This provides breathing properties to the cover. The nonwoven surface layer included in the invention is produced from soybean protein fibers (SPF), biofibers and green bicomponent fibers. Besides being biodegradable, these fibers are the only renewable botanical protein fibers. SPF provides the subject of the invention with nourishing properties for healthy skin owing to the amino acid and protection from ultraviolet rays. Green bicomponent fibers provide biobased solutions and are produced from sugarcane. The structural and characteristic features and all advantages of the invention will be more apparent from the following figures and the detailed description with reference to these figures and therefore the interpretation should be based on these figures and the detailed description. Figures to Understand the Invention Fig. 1 is a representative view of the assembly in which the product