CN211106098U

CN211106098U - Degradable plastic bag composite film and vacuum bag based on same

Info

Publication number: CN211106098U
Application number: CN201921676802.9U
Authority: CN
Inventors: 王宇轩
Original assignee: Zhongshan Yingxin New Material Co ltd
Current assignee: Zhongshan Yingxin New Material Co ltd
Priority date: 2019-09-30
Filing date: 2019-09-30
Publication date: 2020-07-28
Anticipated expiration: 2029-09-30

Abstract

The utility model relates to a degradable plastic bag complex film and vacuum bag based on it, the complex film include PBS membrane surface course, no solvent glue layer and cellulose membrane bottom that set gradually from outside to inside. The vacuum bag made of the composite film simultaneously realizes the functions of quick degradation and vacuum pumping.

Description

Degradable plastic bag composite film and vacuum bag based on same

Technical Field

The utility model relates to a vacuum bag technical field, concretely relates to degradable plastic bag complex film and vacuum bag based on it.

Background

At present, the vacuum bag is widely used in the field of food and medicine packaging. Most of the existing vacuum bags are made of Polyethylene (PE) or polypropylene (PP) materials which are difficult to degrade and cause serious pollution to the natural environment. Most of the degradable materials are biodegradable plastics prepared by high molecular materials such as cellulose, starch, chitin and the like, and a single-layer degradable film prepared by the materials cannot realize the function of vacuumizing.

Disclosure of Invention

The utility model aims at solving the defects of the prior art, and providing a degradable composite film which can be vacuumized and has better mechanical property and a vacuum bag based on the composite film.

The utility model adopts the technical proposal that: a degradable plastic bag composite membrane comprises a PBS (poly butylene succinate) membrane surface layer, a solvent-free glue layer and a cellulose membrane bottom layer which are sequentially arranged from outside to inside.

Preferably, the PBS membrane surface layer is one of a PBS/PBAT (butanediol adipate) modified membrane, a PBS/P L A (polylactic acid) modified membrane or a PBS/P L A/PBAT modified membrane.

Preferably, the cellulose membrane bottom layer is one of a degradable glass cellulose membrane or a bacterial cellulose membrane.

Preferably, the upper surface of the PBS membrane surface layer is provided with a printing layer.

Preferably, a vacuum bag based on above-mentioned degradable plastic bag complex film, includes the bag body, the bag body include bag face, lower bag face, bottom surface, opening and set up the sealed zip fastener at the opening part, last bag face, lower bag face and bottom surface by the aforesaid degradable plastic bag complex film make.

Compared with the prior art, the utility model has the following advantage: the PBS membrane surface layer of the composite membrane of the utility model has higher heat resistance and tensile resistance, and can realize the function of vacuumizing; the cellulose membrane bottom layer has good plasticity and tearing resistance, the solvent-free glue layer is used for compounding the PBS membrane surface layer and the cellulose membrane bottom layer, the excellent performances of the two layers are combined into a whole, and the solvent-free glue layer is environment-friendly glue, so that the whole composite membrane can be fully degraded, and has the advantages of high heat resistance, good mechanical properties such as hardness, melt index and tearing resistance. The utility model discloses a vacuum bag utilizes above-mentioned complex film to make for vacuum bag can degrade fast, realizes the evacuation function.

Drawings

Fig. 1 is a schematic structural diagram of the degradable plastic bag composite membrane of the present invention.

Fig. 2 is a schematic view of the vacuum bag of the present invention.

The numbers in the figures indicate:

1-PBS membrane surface layer, 2-solvent-free glue water layer, 3-cellulose membrane bottom layer, 4-bag body, 41-upper bag surface, 42-lower bag surface, 43-bottom surface, 44-opening and 45-sealing zipper.

The specific implementation mode is as follows:

in order to enhance the understanding of the present invention, the following detailed description will be made in conjunction with the embodiments and the accompanying drawings. The utility model discloses the accessible is implemented as follows:

referring to fig. 1-2, a degradable glue bag composite membrane comprises a PBS membrane surface layer 1, a solvent-free glue layer 2 and a cellulose membrane bottom layer 3 which are sequentially arranged from outside to inside. The PBS membrane surface layer 1, the solvent-free glue layer 2 and the cellulose membrane bottom layer 3 are all made of degradable materials; the solvent-free glue layer 2 is combined with the PBS membrane surface layer 1 and the cellulose membrane bottom layer 3, and the advantages of the PBS membrane surface layer 1 and the cellulose membrane bottom layer 3 are combined into a whole.

The PBS membrane surface layer 1 is one of a PBS/PBAT modified membrane, a PBS/P L A modified membrane or a PBS/P L A/PBAT modified membrane, the toughness of the PBS membrane material is obviously improved by adding PBAT for modification, the PBS/P L A modified membrane has the best dosage of about 10 percent of P L A and can obviously improve the strength of the PBS membrane material, and the PBS/P L A/PBAT modified membrane is a PBS membrane material obtained by ternary cross-linking materials of PBS, PBAT and P L A, the hardness of the material is increased, the tensile strength, the bending strength and other properties are obviously enhanced, and the PBS/P L A/PBAT modified membrane is better than other cross-linking material composite materials in mechanical properties, so that the PBS membrane in the embodiment is preferably a PBS/P L A/PBAT modified membrane.

The cellulose membrane bottom layer 3 is one of degradable glass cellulose membranes or bacterial cellulose membranes, the degradable glass cellulose membranes are made of composite spinning or blended spinning of glass fibers and cellulose fibers, and can be slowly degraded into carbon dioxide and water by microorganisms within a certain time, the bacterial cellulose is extracellular cellulose generated by fermentation of a liquid sugar-containing matrix, and is a high molecular compound formed by connecting β -1, 4 glucan, the bacterial cellulose is composed of unique ribbon fibers, each ribbon fiber is composed of a plurality of microfibers, and the diameter of each ribbon fiber is far smaller than that of other natural and artificial fibers.

The upper surface of the PBS film surface layer 1 is provided with a printing layer, and the required pattern can be printed on the outer surface of the PBS film surface layer 1 according to actual needs.

A vacuum bag based on the degradable plastic bag composite film comprises a bag body 4, wherein the bag body 4 comprises an upper bag surface 41, a lower bag surface 42, a bottom surface 43, an opening 44 and a sealing zipper 45 arranged at the opening 44, and the upper bag surface 41, the lower bag surface 42 and the bottom surface 43 are made of the degradable plastic bag composite film. The vacuum bag is made of the composite film, so that the vacuum bag can be rapidly degraded, the manufacturing reject ratio is low, and the production cost of an enterprise is greatly reduced.

Finally, it should be noted that: the above description is only for the preferred embodiment of the present invention and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The degradable plastic bag composite film is characterized in that: the composite membrane comprises a PBS membrane surface layer (1), a solvent-free glue layer (2) and a cellulose membrane bottom layer (3) which are arranged from outside to inside in sequence.

2. The degradable plastic bag composite film according to claim 1, wherein: the cellulose membrane bottom layer (3) is one of degradable glass cellulose membrane or bacterial cellulose membrane.

3. The degradable bag composite film according to claim 1 or 2, wherein: the upper surface of the PBS film surface layer (1) is provided with a printing layer.

4. The utility model provides a vacuum bag based on above-mentioned degradable plastic bag complex film, includes bag body (4), bag body (4) including last bag face (41), lower bag face (42), bottom surface (43), opening (44) and set up sealed zip fastener (45) in opening (44) department, its characterized in that: the upper bag surface (41), the lower bag surface (42) and the bottom surface (43) are made of the degradable plastic bag composite film of any one of the claims 1-3.