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Fully degradable biomaterial and product thereof

A biomaterial, fully degradable technology, applied in the field of outer packaging bags, coatings, and base films, can solve the problems of LDPE plastics that cannot be degraded in the natural environment, achieve perfect printing effects, simple and easy-to-obtain raw materials, and save production costs.

Inactive Publication Date: 2012-10-03
ZHEJIANG HUAXIA PACKING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims at the shortcomings of the existing sanitary products, bedding and pet products that contain LDPE plastics that cannot be degraded in the natural environment, and provides a kind of LDPE plastic with good flexibility and firmness, good mechanical strength, printability and Heat resistance and excellent biodegradability, new biodegradable materials that can be processed by existing LDPE blown film processing equipment, and the biodegradable materials are used to manufacture film products, and the film products are used to manufacture Application of bottom film, coating film and outer packaging bag of sanitary products, bedding and pet products

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Blend PBAT with a weight ratio of 75% and 25% PLA, and process it into a granular fully degradable biomaterial with a wire drawing machine. The above granular fully degradable biomaterial is used as a film masterbatch through a three-layer co-extrusion on a rotating internal cooling blowing machine. For the film machine, set the screw temperature at 135°C-140°C, the film head temperature at 145°C-155°C, the tee temperature at 145°C-155°C, the blown film processing parameters at 800rpm-1000rpm, the internal , The outer winding tension is 3-4.5kg, the second traction tension is 25-28kg, the speeds of the air cooler, the outer air cooler, and the inner air cooler are 1000rpm-1200rpm, 800rpm-1000rpm, and 500rpm-800rpm respectively, and the thickness of the film is 20μm. The film product was obtained after melting, plasticizing, pressurizing, cooling, corona treatment, pulling, winding, and setting for 24 hours. The film product can be used to manufacture various sanitary pr...

Embodiment 2

[0025] Blend PBAT with a weight ratio of 77% and PLA with a weight ratio of 23%, and process it into granular fully degradable biomaterials with a wire drawing machine. For the film machine, set the screw temperature at 135°C-140°C, the film head temperature at 145°C-155°C, the tee temperature at 145°C-155°C, the blown film processing parameters at 800rpm-1000rpm, the internal , The outer winding tension is 3-4.5kg, the second traction tension is 25-28kg, the speeds of the air cooler, the outer air cooler, and the inner air cooler are 1000rpm-1200rpm, 800rpm-1000rpm, 500rpm-800rpm, and the thickness of the film is 21μm. The film product was obtained after melting, plasticizing, pressurizing, cooling, corona treatment, pulling, winding, and setting for 24 hours. The film product can be used to manufacture various sanitary products, bedding products, pet products, especially the bottom film and coating film of sanitary napkins, armpit pads, breast pads, diapers, mattresses, and ...

Embodiment 3

[0027] Blend PBAT with a weight ratio of 79% and PLA with a weight ratio of 21%, and process it into a granular fully degradable biomaterial with a wire drawing machine, and use the above granular fully degradable biomaterial as a film masterbatch through a three-layer co-extrusion on a rotating internal cooling blowing machine. For the film machine, set the screw temperature at 135°C-140°C, the film head temperature at 145°C-155°C, the tee temperature at 145°C-155°C, the blown film processing parameters at 800rpm-1000rpm, the internal , The outer winding tension is 4-5kg, the second traction tension is 25-28kg, the speeds of the air cooler, the outer air cooler, and the inner air cooler are 1000rpm-1500rpm, 800rpm-1200rpm, 500rpm-800rpm, and the thickness of the film is 23μm, followed by melting , plasticizing, pressurizing, cooling, corona treatment, pulling, winding, and setting the film for 24 hours to obtain the film product. The film product can be used to manufacture va...

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PUM

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Abstract

The invention relates to a fully degradable biomaterial and a thin film product thereof, and discloses the fully degradable biomaterial which consists of 75-90 percent by weight of PBAT (Poly (Butylene Adipate-co-Terephthalate)) and the balance of PLA (Poly Lactic Acid) and a thin film product prepared by taking the fully degradable biomaterial as a master batch. The fully degradable biomaterial and the thin film product thereof have the advantages of full degradability, water resistance, oil resistance, high tensile strength, high flexibility, physical and chemical properties similar to those of an LDPE (Low-Density Polyethylene) plastic thin film, single component, simple process, low energy consumption required for production and being a superior alternative for the LDPE plastic thin film.

Description

technical field [0001] The present invention relates to a fully degradable biological material and its products, in particular to a fully degradable biological material obtained by blending and modifying PBAT and PLA as base materials, a film product made from the fully degraded biological material, and The base film, envelope, and outer packaging bag of various sanitary products, bedding, and pet products made by using the film product. Background technique [0002] Today, petrochemical plastic products have penetrated into all areas of human production and life, and the world's annual plastic consumption has exceeded 160 million tons. According to statistics from the China Plastics Processing Industry Association, China's annual plastic waste exceeds 3 million tons. The average cycle of these petrochemical plastic products degrading in the soil is more than 500 years. When mixed into the soil, it will cause soil compaction, and even wrap the roots, affecting water and nut...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08L67/04B65D65/46
CPCY02W90/10
Inventor 郭永才
Owner ZHEJIANG HUAXIA PACKING CO LTD
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