Biotec Biologische Naturverpackungen & Co Kg

Christoph Hess

Harald Schmidt

Ralf Hackfort

Johannes Mathar

Wolfgang Friedek

Frank Rörthmans

Ralph Beckmann

Christophe Bréso

A multi-layer polymer film comprising at least one middle layer A, the polymeric constituents of which are soluble in aqueous solution, and at least one substantially water-impermeable covering layer B or C arranged above and/or below the at least one middle layer A, wherein the layers A, B and C independently of each other in each case comprise at least one thermoplastic polymer and at least one of the covering layers B and C comprises at least one polyhydroxyalkanoate. Processes for the production of the multi-layer polymer film according to the invention and its use for the production of molded parts, films or bags are furthermore presented and described.

Biodegradable multi-layer film

A multi-layer polymer film comprising at least one middle layer A, the polymeric constituents of which are soluble in aqueous solution, and in each case at least one substantially water-impermeable covering layer B, C arranged above and below the at least one middle layer A, wherein the layers A, B and C independently of each other in each case comprise at least one thermoplastic polymer and at least one of the covering layers B and C comprises at least one polyhydroxyalkanoate is presented and described. Processes for the production of the multi-layer polymer film according to the invention and its use for the production of molded parts, films or bags are furthermore presented and described.

A process is presented and described for the production of moldings, comprising the steps of (a) providing a polymer composition comprising from 1 to 99% by weight of polyhydroxyalkanoate and from 1 to 99% by weight of starch-containing polymer; (b) homogenizing the polymer composition with use of thermal and/or mechanical energy; (c) introducing the polymer composition into a mold; (d) molding the molding in the mold; and (e) removing the molding from the mold. The process described is in particular suitable for the production of hard capsules.

Method for producing moulded parts

A polymer composition is presented and described and includes, based on the total weight of the polymer composition, the following components: a. from 15 to 70% by weight of PLLA, b. from 0.1 to 15% by weight of PDLA, c. from 5 to 40% by weight of polyester, and d. from 5 to 40% by weight of organic or inorganic filler. These polymer compositions can be biodegradable, comprise mainly bio-based carbon, and have an increased heat deflection temperature. These polymer compositions can moreover be used in specific processes in order to produce molded parts, films, or fibers which by virtue of their high heat deflection temperature can also be used as containers for coffee-preparation systems.

Polymer composition containing PLLA and PDLA

The invention relates to a polymer compound which, based on the total weight of the polymer compound, comprises at least the following components: (a) 5 to 50 wgt.-% destructed starch and/or starch derivative, (b) 20 to 70 wgt.-% aliphatic-aromatic copolymer, (c) 10 to 50 wgt.-% polyhydroxyalkanoate and (d) 3 to 25 wgt.-% polyactic acid. Such polymer compounds are characterized by a high ratio of bio-based carbon and exhibit no significant embrittlement or worsening of the mechanical properties profile, despite the presence of increased volumes of polyhydroxyalkanoate, even after storage. The invention further relates to production methods for the polymer compound according to the invention, and use thereof in the production of films, molded parts or fibers.

Polymer composition

A method for the production of a polymer material is shown and described, which is characterized by: a) producing a mixture containing at least 1 to 75 wt.-% starch and/or starch derivative, 10 to 85 wt.-% polyester, and 0.01 to 7 wt.-% of a polymer containing an epoxy group; (b) homogenizing the mixture while supplying thermal and/or mechanical energy; (c) setting the water content of the mixture, so that the end product has a water content less than approximately 12 wt.-%, in relation to the total composition of the mixture. The polymer material produced with the method according to the invention is characterized by outstanding mechanical properties.

Polymer material and method for the production thereof

A multilayered film is shown and described that is used in particular for packaging, which comprises at least one first layer A and at least one second layer B, wherein layer A contains thermoplastic polyester and layer B contains thermoplastic starch. The multilayered film according to the invention is characterized by excellent barrier properties, low sensitivity to moisture, and good mechanical strength.

Multilayer film and method for manufacturing same

A thermoplastic polymer material containing starch is shown and described, which can be obtained by homogenizing a mixture containing 40 to 85 wt.-% starch and/or starch derivative, 15 to 55 wt.-% softener, and 0.01 to 7 wt.-% of a polymer which contains an epoxy group, while supplying thermal and/or mechanical energy and setting the water content of the mixture to less than approximately 12 wt.-%. The polymer material according to the invention is characterized by outstanding mechanical properties.

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Rees, Germany

Christoph Hess