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Biofragmentable straw and method for manufacturing same

A manufacturing method and biological technology, applied in the direction of table utensils, home utensils, table utensils, etc., can solve problems such as easy breakage, and achieve the effects of improving the brittleness of materials, wide utilization value, and improving impact resistance and flexibility.

Inactive Publication Date: 2008-09-03
WEI MON IND +1
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to overcome the defects of the existing straws and provide a biodegradable straw with a new structure. The technical problem to be solved is to provide a biodegradable straw that can improve the traditional biodegradable straw. Straws made of decomposable polylactic acid materials are brittle and easy to break, so they are very suitable for practical use.

Method used

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  • Biofragmentable straw and method for manufacturing same

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Embodiment Construction

[0029] In order to further explain the technical means and effects of the present invention to achieve the intended purpose of the invention, the specific implementation and structure of the biodegradable straw and its manufacturing method according to the present invention will be described below in conjunction with the accompanying drawings and preferred embodiments. , manufacturing method, steps, features and effects thereof are described in detail as follows.

[0030] Due to the rigidity of polylactic acid (PLA) material and insufficient flexibility, the material used to make the straw needs to meet the requirement that the incision is not easy to break during manufacture, and can resist bending or external force when inserting the cup film during use. No fragmentation and other requirements. In order to modify the characteristics of PLA materials, it is necessary to add a modifier that increases flexibility. This modifier also needs to meet the conditions of biodegradabil...

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Abstract

The invention relates to a biodegradable straw and preparation method thereof, at least comprising: 70-99.9 weight percentage of polylactate and 0.1-30 weight percentage of polyester polyhydric alcohol. The preparation method comprises: providing raw material of polylactate; adding polyester polyhydric alcohol into the raw material to form modified polylactate mix material containing 70-99.9 weight percentage of raw material of polylactate and 0.1-30 weight percentage of polyester polyhydric alcohol; sending the polylactate mix material into an extruder wherein the extruder is in about circular tube; and cutting the tube to a preset length. The biodegradable natural polymer polylactate is used as main component and the polyester polyhydric alcohol is used as modifying agent and the aliphatics longchain and alcohols function group on the polyhydric alcohol structure can increased the impact resistance and flexibility of the finished products.

Description

technical field [0001] The invention relates to a straw and a manufacturing method thereof, in particular to a straw with biodegradable natural polymer polylactic acid as the main component, adding polyester polyol as a modifying agent, and utilizing polyols with aliphatic length in structure. The chain and alcohol functional group can improve the impact resistance and flexibility of the finished product made of polylactic acid, a biodegradable straw and a manufacturing method thereof. Background technique [0002] Among the plastic products of the beverage series, straws are widely used in people's livelihood consumption. The existing traditional raw materials for making straws are mainly polypropylene (PP). With the improvement of environmental protection awareness and the improvement of safety requirements for food containers, straws made of traditional petrochemical polymer materials may dissolve harmful substances at around 75°C, and there are concerns about harming the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/04A47G21/18C08L67/00
Inventor 张清心李鸿庆黄明仁叶进辉
Owner WEI MON IND
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