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Straps produced from renewable raw material

A technology for regenerating raw materials and derivatives, applied in the field of extrusion strapping, can solve the problems of unpopularity and complex manufacturing process of weaving strapping

Active Publication Date: 2013-10-09
莫斯卡有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, woven strapping has many disadvantages besides its complicated manufacturing process, so they cannot prevail

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0032] Exemplary implementation

[0033] Pellets of polylactic acid (PLA polymer 4032D from NatureWorks) as L-polylactic acid were melted on a slot die at 220°C and extruded through the slot using a single screw extruder type mold. The extrudates were placed in a water bath at a temperature of 50°C, followed by stretching 1:4 in air. The resulting tape was then fixed in air and cooled before being wound on bobbins. The resulting strapping was then used in testing to strap a moving box by placing the strap around a common moving box so that the ends of the strap overlapped by 2 cm. Weld the overlapping ends of the strapping together using ultrasonic welding. Overall, the manufacturing parameters, in particular the thickness and width of the slot die for extrusion, were chosen in such a way that after stretching a strapping with a thickness of 0.7 mm and a width of 12 mm was obtained.

[0034] The strapping made according to the invention is embossed on its surface, and has mo...

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Abstract

Extruded and self weldable strapping band comprises a material comprising a renewable raw material. Independent claims are also included for: (1) producing the strapping band, comprising melting and extruding the material comprising renewable raw material, cooling the melt in a fluid, and stretching, fixing and / or cooling the obtained tape; and (2) strapping an object with the strapping band, comprising arranging the strapping band around the object so that the strapping band overlaps at least at one point with itself and welding together the overlapping parts of the strapping band at the point.

Description

technical field [0001] The present invention relates to an extruded strapping which is weldable to itself and which is produced from a material containing renewable raw materials, as well as a method for its manufacture and a method for strapping objects. Background technique [0002] In the mid-1990s, tapes for packaging purposes made entirely of biodegradable materials were developed. These bands mainly contain starch. In principle, the strips could be welded together. However, due to the poor heat resistance of starch, these tapes are completely unsuitable for use as strapping, since the welds break under the tensile loads normally used for strapping. Due to the fact that starch is a polysaccharide, the tapes are not hydrolytically stable at that time and have low dimensional stability under heating. In addition, very high concentrations of other components, such as polyhydroxybutyrate, are mixed with the industrial starch, which creates further disadvantages. The str...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B65D63/10B65D65/46B29D29/00
CPCB29C65/20B29C65/18B29C66/4324B29C65/06B29C65/02B29C66/71B29C55/06C08G63/02B29K2995/006B65B13/02B29C66/73712B29C65/08B29D29/00B29C66/4322B29C66/1122B29C66/73711B29C65/16B65D63/10B29C66/73791B29C66/73161Y02W90/10B29K2001/00B29K2067/00B29K2077/00B29K2029/04B29K2067/046B29C63/10
Inventor U·埃贝勒
Owner 莫斯卡有限责任公司
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