Heat-sealing stone paper

A technology of stone paper and heat-sealing layer, applied in layered products, synthetic resin layered products, chemical instruments and methods, etc., can solve problems such as large waste of resources and unfavorable environmental protection, and achieve energy saving, good uniformity and shortening. The effect of the production cycle

Active Publication Date: 2013-09-11
KUNMING IRON & STEEL HLDG CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the problems of large waste of resources and unfavorable environmental protection in the existing packaging materials, the present invention provides a heat-sealing stone paper that can be molded at one time, has good surface printing, good heat-sealing performance, can recycle plastics, and can realize industrialized continuous production. , and use it as a new packaging material

Method used

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Experimental program
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Effect test

Embodiment 1

[0023] The heat-sealable stone paper comprises an upper layer, an intermediate base layer and a lower layer, the upper layer and the lower layer are heat-sealing layers, the intermediate base layer is a foam layer, and the mass ratio of the upper layer, the lower layer, and the intermediate base layer is 15:85, that is, the upper layer: the intermediate base layer : lower layer = mass ratio of 7.5:80:7.5, where:

[0024] The heat-sealing layer is composed of the following components by mass ratio: 8% LLDPE, 90% PP and 2% oleic acid amide;

[0025] The foam layer is composed of the following components by mass ratio: 65% calcium carbonate powder with a fineness of 1250 mesh, 30% polypropylene PP, 1% aluminate, 1% polyethylene wax, 1% paraffin wax, 1% stearic acid %, DCP initiator 0.2%, antioxidant 0.3% (ie 0.2% 1076+0.1% DSTP), AC blowing agent 0.5%;

[0026] It is prepared by the following conventional method: the material of the above middle base layer (i.e. foam layer) is f...

Embodiment 2

[0029] The heat-sealable stone paper comprises an upper layer, an intermediate base layer and a lower layer, the upper layer is a heat-sealable layer, the lower layer is a non-heat-sealable layer, the intermediate base layer is a foam layer, and the mass ratio of the upper layer and the lower layer to the intermediate base layer is 20:80, that is Upper layer: middle base layer: the mass ratio of lower layer=10:80:10; Wherein:

[0030] The heat-sealing layer is composed of the following mass ratio components: 46% EVA, 50% LLDPE and 4% anti-adhesive agent (that is, talcum powder filled masterbatch);

[0031] The foam layer is composed of the following components by mass ratio: 40% calcium carbonate powder with a fineness of 800 mesh and talcum powder, 15% high-density polyethylene HDPE, 0.5% aluminate, 1% polyethylene wax, paraffin wax 1%, stearic acid 1%, DCP initiator 0.2%, antioxidant 0.3% (ie 0.1% 168+0.2% 1010), AC foaming agent 1%;

[0032] The non-heat-sealing layer is c...

Embodiment 3

[0036] The heat-sealable stone paper comprises an upper layer, an intermediate base layer and a lower layer, the upper layer and the lower layer are heat-sealing layers, the intermediate base layer is a non-foaming layer, and the mass ratio of the upper layer 1 and the lower layer 3 to the intermediate base layer 2 is 1:99, that is Upper layer: middle base layer: the mass ratio of lower layer=0.5:90:0.5; Wherein:

[0037] The heat-sealing layer is composed of the following mass ratio components: 50% mPE and 50% LDPE;

[0038] The non-foaming layer is composed of the following components by mass ratio: 30% of diatomite and kaolin with a fineness of 950 meshes, 18% of LDPE and LLDPE, 0.9% of aluminate, 1% of polyethylene wax, and 1% of paraffin wax. %, stearic acid 0.8%, antioxidant (1010) 0.3%;

[0039] It is prepared by the following conventional method: the material of the above middle base layer (i.e. foaming layer) is fed into a main extruder, the material of the upper lay...

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Abstract

The invention provides a piece of heat-sealing stone paper. The heat-sealing stone paper comprises an upper layer, a middle base layer and a lower layer and is once formed in a general three-layer co-extrusion casting combination manner. The heat-sealing stone paper is characterized in that the mass ratio of the upper layer and the lower layer to the middle base layer is (1-20): (99-80); at least one of the upper layer and the lower layer is a heat-sealing layer, and the other layer is a non-heat-sealing layer; and the middle base layer is a foaming layer or a non-foaming layer. According to the heat-sealing stone paper, the processing process is simplified, the production period is shortened, the number of production personnel is reduced, the manufacturing cost is lowered, and the warehouse space is saved. The heat-sealing stone paper has the characteristics of relatively good stiffness and evenness, light specific gravity, high heat-sealing strength, wide heat-sealing range, firm surface printing property and the like and is suitable for packaging products with the heat-sealing strengths required to be lower than 8-10 N/15 mm.

Description

technical field [0001] The invention relates to heat-sealed stone paper, which belongs to the technical field of stone paper making and plastic manufacturing. Background technique [0002] At present, the materials widely used in the market for packaging seeds, food and electronic devices, etc., are mostly made of BOPP film and compounded after printing, or cast a layer of CPP on paper and compounded. Due to the influence of the material itself, there are the following deficiencies: 1. The surface energy of the plastic is low, and the printability is not good; the second is that the adhesive performance cannot meet the requirements (2N / 15cm); the third is that in the process of papermaking, compounding, and film production, the consumption of water, electricity, and steam is large, and the processing cost High, and cause environmental pollution in the production process; Fourth, after paper-plastic compounding, it will be affected by factors such as compounding process condi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/06B32B27/20B32B27/32B32B27/30C08L23/08C08L23/06C08L23/12C08K13/02C08K5/20C08K3/34C08K3/36C08K3/26C08J9/10
Inventor 刘海国郭嘉麟刘瑞铭赵华玲
Owner KUNMING IRON & STEEL HLDG CO LTD
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