Paper plastic cup and production technology thereof

A production process and technology for paper-plastic cups, applied in the field of liquid food packaging, can solve the problems of environmental and human health hazards, environmental pollution of adhesives, poor surface flatness, etc., achieving a high degree of automation, improving production efficiency, high the effect of strength

Inactive Publication Date: 2015-10-07
BRIGHT DAIRY & FOOD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to overcome the low production efficiency in the production process of paper-plastic cups in the prior art, the presence of adhesives in the film covering process will pollute the environment, be harmful to health, and easily cause poor surface smoothness and BOPP film thickness The thickness of the cup must be more than 18μm, and the offset printing technology is easy to produce ink odor, which is harmful to the environment and human health. A paper-plastic cup and its production process are provided.

Method used

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  • Paper plastic cup and production technology thereof
  • Paper plastic cup and production technology thereof
  • Paper plastic cup and production technology thereof

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Experimental program
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Embodiment 1

[0040] The preparation method of the paper-plastic cup of the present embodiment comprises the steps:

[0041] (1) The paper is flexographically printed by a unit-type flexo printing machine, and a printing ink layer is formed on one surface of the paper; the ink used is the water-based acrylic resin ink of Shanghai Shengweike Ink Co., Ltd.; the weight of the paper 100g / m 2 ; In the flexographic printing, in order to ensure that each dot on the printing plate can be inked, the number of anilox rolls of the anilox roller is selected to be ≥350 lines / inch, and the number of screen lines to be printed is ≥150 lines / inch;

[0042] (2) Extrusion compound machine is used, and the extrusion coating process is carried out according to the following steps: the plastic particles are plasticized by the screw and then extruded from the T-shaped die, stretched and attached to the surface of the printing ink layer, and formed after cooling and setting One plastic layer; no adhesive and no ...

Embodiment 2

[0049] In this embodiment, except for the following conditions, the remaining control conditions are the same as in Embodiment 1.

[0050] (1) Paper weight is 130g / m 2 ;The ink used is the flexographic UV ink of Hanghua Ink Chemical Company

[0051] (2) In the extrusion coating process, the melt temperature after plasticization is 340°C, the thickness of the plastic layer is 10μm; the air gap distance between the die lip and the cooling roller is 100mm;

[0052] (3) The adhesive used is QY-329 from Jiashan Pamir Latex Paint Factory; the inner plastic cup is a commercially available 200ml polystyrene cup with a weight of about 6g.

Embodiment 3

[0054] In this embodiment, except for the following conditions, the remaining control conditions are the same as in Embodiment 1.

[0055] (1) The weight of paper is 150g / m 2 ;

[0056] (2) In the extrusion coating process, the melt temperature after plasticization is 320°C, the thickness of the plastic layer is 12μm; the air gap distance between the die lip and the cooling roller is 120mm.

[0057] (3) The adhesive used is Q2283 from Henkel, Germany; the inner plastic cup is a commercially available 200ml polystyrene cup with a weight of about 6g.

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Abstract

The invention discloses a paper plastic cup and a production technology thereof. The paper plastic cup orderly comprises a plastic layer, a printing ink layer, a paper layer and an inner plastic cup layer from inside to outside. The paper layer and the inner plastic cup layer are bonded by multiple binder points. The thickness of the plastic layer is in a range of 8-12 micrometers. The printing ink layer utilizes aqueous printing ink or UV-cured printing ink. The production technology utilizes rolling paper flexible printing, is free of single paper cutting, has a high automation degree and improves production efficiency. Through an extrusion film-formation process, the plastic layer does not contain a binder, a solvent and printing ink peculiar smell so that the fresh milk packaged by the plastic layer has no peculiar smell and satisfies food production safety and health requirements. The paper plastic cup has small thickness, saves raw materials, reduces a cost, saves energy, is environmentally friendly, has no peculiar smell and satisfies food production safety and health requirements.

Description

technical field [0001] The invention relates to the field of liquid food packaging, in particular to a paper-plastic cup and a production process thereof. Background technique [0002] At present, the packaging of paper-plastic cups is in the ascendant in the product packaging of fresh milk, yogurt and milk tea. The cup body of paper-plastic cups on the market is generally made of materials from outside to inside: the first layer is BOPP layer, the second layer is printing ink, the third layer is paper, the fourth layer is adhesive layer, and the fifth layer is The layer is plastic PP or PS. Its production process is: sheet-fed offset printing-paper surface coated with BOPP-die-cutting into paper sheets, and then glued to the formed plastic cup PP or PS cup by adhesive. [0003] The above-mentioned production process not only has the defect of low production efficiency, but also generally uses adhesives to bond the paper and BOPP film together during the operation of paper...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B1/02B32B27/10B32B27/30B32B27/32B32B7/12B32B37/12B41M1/04
CPCB32B1/02B32B7/12B32B27/10B32B27/302B32B27/32B32B37/12B32B2307/7265B32B2439/70B41M1/04
Inventor 刘向红张薇蓉张宇
Owner BRIGHT DAIRY & FOOD
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