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Biological degradable compound packaging film and packaging bag

A biodegradable material and packaging film technology, applied in the direction of bio-packaging, sustainable packaging, packaging, etc., can solve the problems of environmental pollution, non-degradable and uneconomical disposable plastic products

Inactive Publication Date: 2019-07-05
刘建林 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Most of the disposable plastic products currently used in the market (such as plastic mulch, garbage bags, shopping bags, tableware, food packaging and industrial packaging) cannot be degraded in the natural environment, which brings convenience to human life, but also brings increasing serious environmental pollution
Due to the wide application fields and scattered use of plastic products, and the waste generated is light in weight and small in size, recycling is unrealistic and uneconomical

Method used

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  • Biological degradable compound packaging film and packaging bag
  • Biological degradable compound packaging film and packaging bag
  • Biological degradable compound packaging film and packaging bag

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0091] (1) Use a plastic extrusion blown film machine, using polybutylene succinate (BASF E 1200), antioxidant (1010), light stabilizer (508) and triglycidyl isocyanurate ( TGIC) mixture, the mixing ratio is: (98:0.01:0.02:1.97), the processing temperature is: extruder 140-190°C, head 160-190°C, extruded into a heat-sealing layer film with a thickness of 70μm .

[0092] (2) A polyvinyl alcohol coating solution was coated on the EDM-treated surface of the above-mentioned heat-sealing layer film using a coater.

[0093] (3) With a dry laminating machine, the coating surface of the above-mentioned coated heat-sealing layer film and the cellulose film with a thickness of 40 μm are bonded and compounded with an adhesive, and then put into a curing chamber for curing for 48 hours. The temperature of the curing chamber is 45 -55°C.

[0094] (4) Slitting the above-mentioned matured film, and adopting a back-sealing bag-making mechanism to make bags.

[0095] The total thickness of ...

Embodiment 2

[0098] (1) Use a plastic extrusion casting machine, using polylactic acid (4032D), polycaprolactone (6800), polyethylene (2420) and antibacterial agent (SX25), the mixing ratio is: (50:40:9.99:0.01 ), the processing temperature is: extruder 120-200°C, head 180-200°C, extruded and processed into a heat-sealing layer film with a thickness of 110 μm.

[0099] (2) Using a compound machine, glue and compound the above-mentioned heat-sealing layer film and paper with a thickness of 60 μm with a polyvinyl alcohol water-based adhesive, and put them into a curing room for aging for 36 hours. The temperature of the curing room is 50°C.

[0100] (3) Use a coating machine to coat the outer paper surface of the above-mentioned cured film with polylactic acid varnish.

[0101] (4) Slitting the above-mentioned film coated with varnish, and using an eight-side-seal bag-making machine to make bags.

[0102] The total thickness of the film is 170μm, and the measured oxygen transmission rate of...

Embodiment 3

[0104] (1) Use a plastic extrusion blown film machine, using poly(butylene adipate terephthalate) (PBAT) (BASF C1200), maleic anhydride graft modified polyethylene (E226), titanium dioxide (T902) and antibacterial agent (SX25), the mixing ratio is: (95:3:0.2:1.8), the processing temperature is: extruder 140-190°C, head 160-190°C, extruded to a thickness of 50μm heat-sealing film.

[0105] (2) A polyvinyl alcohol coating solution was coated on the corona-treated surface of the above-mentioned heat-sealing layer film using a coater.

[0106] (3) Use a dry compound machine to bond the coated surface of the above-mentioned coated heat-sealing layer film to paper with a thickness of 30 μm, and then put it into the curing room for curing for 48 hours. The temperature in the curing room is 45-55 ℃.

[0107] (4) Slitting the above-mentioned matured film, and adopting a three-side sealing bag-making machine bag.

[0108] The total thickness of the film is: 80μm, and the measured oxyge...

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Abstract

The invention belongs to the field of packaging materials and packaging products, and relates to a biological degradable compound packaging film and a packaging bag. Particularly, the invention relates to the packaging film which sequentially comprises a biological degradable heat seal layer, a blocking layer and a protection layer. The invention further relates to a method for preparing the packaging film, application of the packaging film, and a packaging product (such as the packaging bag) with the packaging film.

Description

technical field [0001] The invention relates to the field of packaging materials, in particular to a biodegradable composite packaging film and a packaging bag. Background technique [0002] As we all know, plastic materials and products have the characteristics of excellent comprehensive performance, low price, and easy molding and processing. As a new type of material, it has been widely penetrated into various sectors of the national economy and various fields of people's lives. It has become one of the four major industries alongside steel, wood, and cement. Large support materials not only make up for the shortcomings of some traditional materials in terms of quality and quantity, but also become indispensable materials for technological progress in some sectors. [0003] Most of the disposable plastic products currently used in the market (such as plastic mulch, garbage bags, shopping bags, tableware, food packaging and industrial packaging) cannot be degraded in the n...

Claims

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Application Information

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IPC IPC(8): B32B7/12B32B23/08B32B27/06B32B27/08B32B27/10B32B27/20B32B27/28B32B33/00B65D30/08B65D65/46
CPCB32B7/12B32B23/08B32B27/06B32B27/08B32B27/10B32B27/20B32B27/28B32B33/00B32B2255/10B32B2255/12B32B2255/26B32B2307/73B32B2439/70B65D31/02B65D65/46Y02W90/10
Inventor 刘建林刘燕
Owner 刘建林
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