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High-filling high-transparency biodegradable air bubble film and preparation method thereof

A technology of light transmission and bubble film, applied in the field of bubble film, can solve the problems of air leakage at the bubble point, reduce the light transmittance of the bubble bag, and reduce the adhesion between the melt and the metal roller, so as to reduce thermal degradation, Excellent penetrability and the effect of improving fluency

Pending Publication Date: 2022-04-29
杭实科技发展(杭州)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a high-filling and high-transparency biodegradable air bubble film and its preparation method, which solves the problem of increasing the filling of inorganic substances in the resin in the prior art, which can reduce the cost, but also reduces the air permeability of the air bubble bag at the same time. Luminosity, because PBAT resin contains more inorganic fillers, the adhesion between the melt and the metal roll will be greatly reduced, and the two layers of air bubble films cannot be bonded, resulting in the bubble points on the air bubble film being slightly squeezed air leak problem

Method used

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  • High-filling high-transparency biodegradable air bubble film and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] S1: Vacuum dry 70g of PBAT, 4g of L-polylactic acid (PLLA) for 2 hours at a drying temperature of 100°C, dry 4g of polycaprolactone for 2 hours at a drying temperature of 80°C, and dry 20g of inorganic filler silicon micropowder. Number ≥ 3000 Vacuum drying 4h, drying temperature 100 ℃;

[0032] S2: Weigh the dried PBAT, L-polylactic acid (PLLA), polycaprolactone, and inorganic filler silicon micropowder, then weigh 0.7g of plasticizer trioctyl citrate, 1g of antioxidant tea polyphenol, 0.3 The chain extender ADR-4468 of g is placed in a high-speed mixer for high-speed mixing, the high-speed mixing time is 10 minutes, and the rotation speed is kept at 300rpm;

[0033] S3: Put the mixed material in a twin-screw extruder to melt and blend, extrude and granulate, the extrusion temperature is 160°C, the die head temperature is 130°C, and the screw speed is 300rpm to obtain blended pellets;

[0034] S4: Put the obtained blended pellets into the air bubble film casting machi...

Embodiment 2

[0036] S1: 63g of PBAT, 12g of D-polylactic acid (PDLA) were vacuum-dried for 5 hours at a drying temperature of 80°C, 3g of polycaprolactone was vacuum-dried for 5 hours at a drying temperature of 45°C, and 20g of inorganic fillers were precipitated with barium sulfate. And the number of mesh ≥ 3000 vacuum drying 8h, drying temperature 150 ℃;

[0037] S2: Weigh the dried PBAT, dextrorotatory polylactic acid (PDLA), polycaprolactone, and inorganic filler precipitated barium sulfate, then weigh 1g of plasticizer tributyl citrate, 0.7g of phytic acid, 0.3g of The chain extender ADR-4370 is placed in a high-speed mixer for high-speed mixing, the high-speed mixing time is 5 minutes, and the speed is kept at 600rpm;

[0038] S3: Put the mixed material in a twin-screw extruder to melt and blend, extrude and granulate, the extrusion temperature is 175°C, the die head temperature is 150°C, and the screw speed is 180rpm to obtain blended pellets;

[0039] S4: Put the obtained blended ...

Embodiment 3

[0041] S1: Vacuum dry 62.5g of PBAT, 6g of racemic polylactic acid (PDLLA) for 6 hours at a drying temperature of 60°C, dry 6g of polycaprolactone for 6 hours at a drying temperature of 60°C, and dry 23g of inorganic filler sodium sulfate , and the number of mesh ≥ 3000 is vacuum dried for 6 hours, and the drying temperature is 60°C;

[0042] S2: Weigh the dried PBAT, racemic polylactic acid (PDLLA), polycaprolactone, and inorganic filler sodium sulfate, then weigh 1g of plasticizer glycerin, 0.5g of antioxidant 1010, and 1.0g of chain extender The agent ADR-4368 is placed in a high-speed mixer for high-speed mixing, the high-speed mixing time is 8 minutes, and the speed is kept at 600rpm;

[0043]S3: Put the mixed materials in a twin-screw extruder to melt and blend, extrude and granulate, the extrusion temperature is 185°C, the die head temperature is 180°C, and the screw speed is 200rpm to obtain blended pellets;

[0044] S4: Put the obtained blended pellets into a bubble ...

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Abstract

The invention discloses a highly-filled high-light-transmittance biodegradable air bubble film and a preparation method thereof. The highly-filled high-light-transmittance biodegradable air bubble film is prepared from the following raw materials in parts by weight: 45-70 parts of PBAT, 4-12 parts of polylactic acid, 3-8 parts of polycaprolactone, 20-40 parts of inorganic filler, 0.5-2 parts of plasticizer, 0.2-1 part of antioxidant and 0.2-1 part of chain extender. The preparation method comprises the following steps: S1, carrying out vacuum drying on the PBAT, the polylactic acid, the polycaprolactone and the inorganic filler; s2, weighing the dried PBAT, polylactic acid, polycaprolactone and an inorganic filler, weighing a plasticizer, an antioxidant and a chain extender according to a ratio, and carrying out high-speed mixing in a high-speed mixer; s3, blending, extruding and granulating to obtain blended granules; and S4, putting the obtained blended granules into an air bubble film casting machine, and extruding to obtain the high-filling and high-light-transmission biodegradable air bubble film. High heat sealing strength can still be kept under the condition that high filling is added, the produced air bubble film is not prone to air leakage, and the air bubble film can be composted and degraded after being used up and is a novel environment-friendly material.

Description

technical field [0001] The invention relates to the technical field of air bubble film, in particular to a biodegradable air bubble film with high filling and high light transmittance and a preparation method thereof. Background technique [0002] Bubble film, also known as bubble cushion, is made of two or more layers of plastic film bonded in a molten state. The middle layer has many small holes and bubbles. The material has good elasticity, transparency, and good sound insulation. , thermal insulation, and shock absorption properties, it is mostly used in the packaging protection field of household appliances, precision instruments, handicrafts and other supplies. [0003] At present, the rapid development of e-commerce has led to a rapid increase in the order volume of the logistics industry. Foamed plastic boards are gradually replaced by bubble bags due to their shortcomings such as fragility and difficult foam recycling. Traditional bubble bags are made of non-degrada...

Claims

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Application Information

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IPC IPC(8): C08L67/02C08L67/04C08K3/30C08K3/36C08J5/18
CPCC08J5/18C08J2367/02C08J2467/04C08K2003/3045C08K3/36Y02W90/10
Inventor 吴欣儒刘岗金泽枫张伟成张云飞黄谋长许洪根赵文彦姚向荣
Owner 杭实科技发展(杭州)有限公司
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