Biodegradable sealing tape

A biodegradable and sealing technology, applied in the direction of adhesives, film/flake adhesives, etc., can solve problems such as environmental pollution of biodegradable sealing tapes

Active Publication Date: 2021-09-14
GUANGZHOU BAOLI TRADE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Based on this, it is necessary to provide a biodegradable sealing tape that can not only solve the problem of environmental pollution caused by the existing biodegradable sealing tape, but also reduce production energy consumption.

Method used

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Examples

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preparation example Construction

[0037] This embodiment also provides a biodegradable box sealing tape 10 prepared by a method for preparing the biodegradable box sealing tape. The preparation method of the biodegradable sealing tape comprises the following steps:

[0038] see figure 2 As shown, S1: Take the substrate layer 200, which is a modified PLA film. The preparation method of the substrate layer 200 in step S1 includes the following steps: melting and masticating PLA particles, PCL particles and a plasticizer to form a PLA / PCL composite film, that is, the substrate layer 200 . The mass ratio of PLA particles to PCL particles is 1:10-10:1. PLA particles, PCL particles and plasticizers are melted and masticated at 70°C-200°C.

[0039] S2: Stretch the substrate layer 200 in step S1 laterally, then apply a release agent on its upper surface, and then perform longitudinal stretching, the release agent is cured at the temperature of the longitudinal stretching to form the release layer 100, The release...

Embodiment 1

[0044] see image 3 As shown, in this embodiment, the biodegradable box sealing tape 10 is prepared by the biodegradable box sealing tape 10 production equipment. The production equipment of the biodegradable sealing tape 10 includes an extruder 20 , a die head 30 , a horizontal drawing machine 40 , a first gluing machine 50 , a longitudinal drawing machine 60 , a second gluing machine 70 and a winding machine 80 arranged in sequence. Specifically include the following steps:

[0045] (1) Preparation of release agent

[0046] According to the formula in Table 1, take a certain mass of water-based heat-curable polysiloxane and a certain mass of thermal initiator, and mix them uniformly by ultrasonic to prepare a heat-curable polysiloxane resin, that is, a release agent. Potassium persulfate and ammonium persulfate are free radical thermal initiators. Table 2 shows the performance test data of the heat-cured silicone resin corresponding to each formulation.

[0047] Table 1 ...

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Abstract

The invention discloses a biodegradable sealing tape. The biodegradable sealing tape comprises a release layer, a substrate layer and an adhesive layer laminated in sequence, and the substrate layer is a PLA / PCL composite film. The base layer and adhesive layer of the biodegradable sealing tape are made of biodegradable materials, which can reduce environmental pollution to a large extent and meet environmental protection needs. The entire film covering process has no VOC emissions, is green and environmentally friendly, and can be used to a greater extent. It can reduce environmental pollution; it can also simplify the preparation process of biodegradable sealing tape, apply a release agent during the process of biaxial stretching to form a substrate layer, and use the heat during biaxial stretching to thermally cure the release agent at the same time A release layer is formed, and a composite film that combines the substrate layer and the release layer is produced at the same time. Compared with the traditional processing technology, it has the characteristics of simplicity, high efficiency and low energy consumption.

Description

technical field [0001] The invention relates to the technical field of biodegradable sealing tape, in particular to a biodegradable sealing tape. Background technique [0002] Biodegradable sealing tape is widely used in the market, and many industries cannot do without biodegradable sealing tape in daily production and life. Especially in today's booming logistics industry, the demand for biodegradable sealing tape has surged. However, most of the biodegradable sealing tapes on the market are still made of non-degradable materials, which has serious environmental pollution problems. The glass transition temperature of PLA, a degradable material, is only 60°C. If the film is biaxially stretched and then thermally processed, it will seriously affect the performance of the film. In addition, biodegradable sealing tape generally includes a release layer, a substrate film and an adhesive layer stacked in sequence. The release layer is set to ensure that the rolled biodegradable...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J7/25C09J7/20C09J7/30C08L67/04
CPCC08L67/04C08L2201/06C08L2205/025C09J2407/00C09J2467/006C09J7/201C09J7/255C09J7/30
Inventor 陈勇军陈丽娟黎德庆
Owner GUANGZHOU BAOLI TRADE
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