Application of the hottest double-layer coextrusio

Application of double-layer coextrusion plastic tableware production equipment

I. the necessity of developing environmental friendly tableware

due to the non degradability of foaming tableware, it has a great impact on the environment, and there are still some difficulties in comprehensive recycling. For the sake of environmental protection, the State Economic and Trade Commission issued Order No. 6, which clearly stipulates that the production and sales of disposable foamed tableware are prohibited in China, and puts forward the basic requirements for replacement products, that is, they are easy to recycle and degradable. The new national standard for degradable tableware was issued, which is divided into two categories and five varieties, including "light/biodegradable polypropylene tableware", "pulp molding tableware", "cardboard coated tableware", "all starch tableware", "plant fiber synthetic tableware" and other new tableware. In order to ensure the safety of new tableware to human body and correctly guide the research, development, promotion and use of disposable degradable and environment-friendly tableware, according to the requirements of the State Bureau of technical supervision and other departments and the use of various lunch boxes in the country in recent years, combined with our experience in the research and exploration of various new fast food tableware in the past three years, it is believed that under the current market conditions and technical conditions of disposable tableware in China, It is the most feasible to promote the use of Degradable Polypropylene lunch boxes (PP), and its main advantages are as follows:

1: the raw materials are widely sourced and the quality is stable, which can fully meet the requirements in China

2: the product quality can meet the strict requirements of the Ministry of health on polymer food packaging containers and the relevant indicators of disposable degradable tableware, and the degradation fully meets the national standard

3: the price of qualified products is relatively reasonable, lower than that of paper products (about 0.006 yuan/g), which is easy to promote and apply

4: the product is more safe and hygienic, and can be used in the microwave oven. It can hold food below 120 degrees without spilling harmful substances, which is impossible for other disposable tableware

5: the discarded lunch boxes are easy to recycle and reuse, and people pick them up without the government's compulsory intervention, which greatly reduces the amount of landscape pollution

6: the degradation speed in the field is fast. It can be broken and powdered in normal temperature environment for months, and the molecular weight is greatly reduced (more than 80%, and the molecular weight is more than 20% above 10000). It is easy to be absorbed by the environment after being eroded by microorganisms, and there is no secondary pollution problem

7: small investment and high output. The total equipment investment is calculated based on the daily production of 80000 ~ 120000 products. If one-step production equipment is adopted, according to different types of equipment, it only needs about 120000 ~ 220000 yuan, and the annual output of lunch boxes can reach 25 ~ 36million, with strong market adaptability

8: it can produce all kinds of thermoformed plastic products (such as cold drink cups, yogurt cups, ice cream cups, tofu boxes, fast food boxes, vegetable plates, medicine, light industry, textiles, tourism, toys, etc.), but the same investment and output is three to five times higher than that of paper tableware production lines

II. Introduction to production process (taking double-layer composite equipment as an example)

this equipment is currently a more advanced and fully functional composite extrusion molding machine in the domestic one-step tableware molding machine. It can integrate extrusion, plastic suction, positive pressure forming and negative pressure forming, and operate continuously at high speed. It realizes automatic continuous extrusion and sheet drawing of the whole machine. At the same time, it investigates the factory data of the main manufacturers at home and abroad that change the coaxiality of the fatigue testing machine. However, due to the simple operation of the microcomputer controlled automatic concrete pressure testing machine, all the processing procedures improve the production efficiency and effectively save energy. As long as the materials are added into the hopper, the whole process of automatic operation from raw materials to product molding and then to cutting can be realized, and finally high-quality double-layer and two-color composite tableware and packaging products can be obtained. The products produced have the advantages of good finish, moderate hardness, multiple color matching, low cost, etc. because of the positive pressure forming system, the safety inspection machine can also process and form products with a special depth of 80mm. The products are widely used in supermarkets, distribution centers, schools, fast food restaurants, medicine, food packaging and other industries and export trade

III. main equipment configuration

65/80 extruder, molding machine, cutting machine, vacuum pump, mixer, crusher, etc.

IV. process flow

pp resin + degradable masterbatch + calcium carbonate filler - melting - extrusion - pulling - molding - cutting - packing

v. investment and benefit analysis

1: main products: disposable fast food box, clean dish, bowl, disc chess format packaging holder, dried fruit packaging holder Water cups and other products. It is suitable for the production of PP, PE, PS, PVC and other materials

2: production energy: the production capacity of a single machine is 120000 pieces/22 hours, the annual output is 36million pieces/ten months, and the annual use of raw materials is about 600 tons

3: equipment investment: 220000 yuan (the current full-automatic price is 178000 yuan, and the semi-automatic price is 162000 yuan)

4: installed capacity: 65 kW (using power of 35 kW/h)

5: 150 square meters of production plant, 100 square meters of finished products warehouse, 100 square meters of raw materials warehouse and other rooms are required

6: a single shift requires 5 production workers

7: 200000 yuan of working capital is required

v. calculation of production cost and profit per ton: (calculated by 16.5g of 400ml lunch box)

1: PP raw material 47% (470 kg) × 6.8 yuan/kg =3196 yuan

2: degradation masterbatch 0.2% (2kg) × 25 yuan/kg =50 yuan

3: calcium carbonate filler 54% (540 kg) × I hope it will be helpful to you 8 yuan/kg =978 yuan

comprehensive material cost 4224 yuan/ton

4: the utilization rate of electricity is 35 kW/h (including the consumption of auxiliary equipment), the production time of tons of materials is 11 hours, and the consumption of electric energy is 385 degrees × 0.66 yuan/degree =254.1 yuan

5: the depreciation of equipment is calculated based on six years, with 100.46 yuan per day and 50.3 yuan per ton of material

6: 8 workers × 20 yuan =160 yuan/ton (12 hours, including shift staff)

7: sales business office and other expenses 100 yuan/ton

8: Tax (calculated by 6% of turnover) =420 yuan/ton

9: management office staff expenses 8 people × 50 yuan/day =400 yuan, equivalent to 200 yuan per ton of materials

10: the transportation cost of raw materials and products per ton is 200 yuan/ton

11: the packaging cost is 1200 pieces/box, a total of 50 packaging boxes × 6 yuan =300 yuan (including plastic bags)

the comprehensive cost of materials per ton is 5908.4 yuan

58000 two-color composite tableware are produced per ton of materials, and the lowest domestic ex factory price is 0.11 yuan/piece (the market price is not less than 0.14 yuan/piece) = ton sales 6380 yuan

ton sales 6380 yuan - comprehensive consumption 5908.4 yuan = ton net profit 471.6 yuan

600 tons of raw materials used annually × 471.6 yuan = profit 282960 yuan

the unit uses 600 tons of raw materials and realizes a profit of 282960 yuan every year according to the ten month production period. (end)