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Preparation method of biodegradable sealing tape and biodegradable sealing tape

A biodegradable and box-sealing technology, which is applied in the direction of adhesives, film/sheet adhesives, etc., can solve problems such as rigid and cumbersome processes, unnecessary large energy consumption, and impact on film performance, so as to achieve simple processes and meet environmental protection needs , reducing the effect of the impact

Active Publication Date: 2021-06-04
GUANGZHOU BAOLI TRADE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The process is rigid and cumbersome, and unnecessary energy consumption is large
In addition, most of the 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 biodegradable material, is only 60°C. If the film is biaxially stretched and then thermally processed, it will seriously affect the performance of the film.

Method used

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  • Preparation method of biodegradable sealing tape and biodegradable sealing tape
  • Preparation method of biodegradable sealing tape and biodegradable sealing tape
  • Preparation method of biodegradable sealing tape and biodegradable sealing tape

Examples

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preparation example Construction

[0038] 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:

[0039] 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.

[0040] 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 preparation method of a biodegradable sealing tape and a biodegradable sealing tape. The preparation method of the biodegradable sealing tape comprises the following steps: S1: taking a substrate layer, which is a modified PLA film; S2: transversely stretching the substrate layer in step S1, and then The upper surface is coated with a release agent, and then stretched longitudinally. The release agent is cured at the temperature of the longitudinal stretch to form a release layer, and the release layer and the substrate layer form a composite layer; S3: in The lower surface of the composite layer prepared in step S2 is coated with an adhesive to form an adhesive layer. The preparation method of the biodegradable sealing tape has a simple preparation process and can reduce the impact on the performance of the film.

Description

technical field [0001] The invention relates to the technical field of box sealing tape, in particular to a preparation method of a biodegradable box sealing tape and the biodegradable box sealing tape. Background technique [0002] The sealing tape market is widely used, and many industries cannot do without sealing tape in daily production and life. Especially in today's booming logistics industry, the demand for sealing tape has surged. The sealing tape generally includes a release layer, a substrate film and an adhesive layer stacked in sequence. The release layer is provided to ensure that the rolled sealing tape can be peeled off smoothly layer by layer during use. In order to ensure that there is no mutual adhesion during winding, it is necessary to compound a release layer on one side of the substrate film in advance, and then compound an adhesive layer on the other side of the substrate film. In the traditional preparation process, the substrate film is often biaxi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J7/25C09J7/20C08L67/04
CPCC08L67/04C09J2467/006C09J2483/005C09J7/201C09J7/255
Inventor 陈丽娟陈勇军黎德庆
Owner GUANGZHOU BAOLI TRADE